A dart is thrown horizontally at a target's center that is 5.00\,\text m5.00m5, point, 00, start text, m, end text away. The dart hits the target 0.150\,\text m0.150m0, point, 150, start text, m, end text below the target's center.What was the initial horizontal velocity of the dart?

Answers

Answer 1

Answer:

Explanation:

Given

the range = 5.00m (distance moved in horizontal direction)

Height = 0.150m

Required

Initial velocity of the dart

Using the formula for calculating range of a projectile;

R = U√2H/g

5 = U√2(0.15)/9.8

5 = U√0.0306

5 = 0.1749U

U = 5/0.1749

U = 28.59m/s

Hence the initial horizontal velocity of the dart is 28.59m/s

Answer 2

Answer:

28.59

Explanation:

khan academy


Related Questions

HELP NEEDED ASAP I'M GIVING BRAINLIEST

1) Select the best answer from the choices below. Light has many properties of waves, but sometimes it also behaves like:


a

A photon

b

Polarized light

c

Ultraviolet rays

d

A stream of particles


2) What type of waves transmit signals in satellite communication?

a
Microwaves
b
X-rays
c
Gamma Rays
d
Radio Waves

3) Cell phones use digital signals to send and receive information. These digital signals travel as what kind of wave?

a
Gamma rays
b
X-rays
c
Microwaves
d
Radio waves

Answers

Answer:

1.

d . A stream of particles

2. D. Radiowave

3. Microwaves

Answer:

1.

d . A stream of particles

2. D. Radiowave

3. Microwaves

Explanation:

Why work and energy both have same unit? Give reasons?

Answers

Answer:

Explanation:

both have same unit because energy is defined as the ability to do work and work is the measure of transfer of energy when an objects moved from one place to another place so both are same thats why both have same  units

Una barra de hierro cuya longitud inicial es de 2m se le incrementa su temperatura de 20 °C a 120 °C ¿Cuál es la longitud final de la barra? (considera que el coeficiente de dilatación del hierro) es 1,2 x 10-5 1/°C ( 3 puntos)

Answers

Answer:

1.9976 m

Explanation:

An iron bar whose initial length is 2m has its temperature increased from 20 ° C to 120 ° C. What is the final length of the bar? (consider that the coefficient of expansion of iron) is 1.2 x 10-5 1 / ° C (3 points)

Given that,

Initial length of an iron bar, [tex]L_0=2\ m[/tex]

The temperature increased from 20°C to 120°C

The coefficient of expansion of iron is [tex]1.2\times 10^{-5}\ /^{\circ} C[/tex]

We need to find the final length of the bar.

The linear expansion equation is given by :

[tex]\Delta L=\alpha L\Delta T[/tex]

Where [tex]\Delta L[/tex] is the change in length

[tex]\Delta L=1.2\times 10^{-5}\times 2\times (120-20)\\\\=0.0024\ m[/tex]

Also, [tex]\Delta L = L_o-L[/tex]

L is final length

[tex]0.0024= 2-L\\\\L=2-0.0024\\\\=1.9976\ m[/tex]

So, the final length of the bar is 1.9976 m

The Moon has a radius of 1.7 × 106 m and a mass of 7.3 × 1022 kg. Find the gravitational field on the surface of the Moon.

Answers

Answer:

10.7*[tex]10^{6}[/tex]

Explanation:

Which statement is correct about two objects that have gravitational force?
They have mass.
They move slowly.
They are round in shape.
They have high temperature.



Answers

Answer:

1 and 2

Explanation:

The formula itself has nothing to do with shape or temperature. The formula does have mass and the speed depends on the how great the mass/radius is.

They have mass
They move slowly
A and B

how does an air pump work​

Answers

Answer:

When the piston is pulled up, air gets sucked into the pump through the inlet. The pump chamber depressurizes as it fills with air. When the piston is forced down, the air becomes compressed and closes the inlet. Then the air flows out from the outlet

PLS HELP ME THIS IS DUE TONIGHT

Answers

By listening for it underwater, using SONAR.

Hope this helped!

Which quantities define momentum?​

Answers

Answer:

velocity and mass

Explanation:

:) apek

I WILL MARK BRAINLIEST!!ASAP!!! Wet Lab - Coulomb's Law lab from edge!!

Answers

Answer: nah

Explanation:

A wet lab experiment for Coulomb's law involves measuring the force between charged objects immersed in a liquid. The experiment is called a "wet" lab because it involves liquid or aqueous solutions.

What is Coulomb's law?

Coulomb's law is an equation that describes the electrostatic force between two charged particles.

It states that "the force is directly proportional to the product of the charges and inversely proportional to the square of the distance between them."

The equation is given by:

F = k×(q₁ × q₂) / r²

Where

F = the electrostatic force,

k =Coulomb's constant,

q₁ and q₂= the charges of the particles,

r =the distance between the.

In this question,

In the experiment, two conductive objects are charged with opposite charges using a high-voltage power supply, which can be controlled to vary the magnitude of the charges.

The two objects are then immersed in a non-conductive liquid, such as oil or water, and positioned a fixed distance apart.

Using a force sensor or a balance, the force between the two objects is measured as they move toward each other. By measuring the force at different distances, the experiment can verify Coulomb's law, which predicts that the force between two charged objects is proportional to the product of their charges and inversely proportional to the square of their separation distance.

The experiment can be performed with different pairs of charged objects with different magnitudes of charge and separation distances, allowing the relationship between the force and these variables to be investigated. This provides insight into the electrostatic interaction between charged objects in a liquid, which has applications in various fields, including electrochemistry, material science, and biophysics.

Therefore, in a wet lab experiment on Coulomb's law, we have to immerse the apparatus in aqueous solutions.

To learn more about Coulomb's law click:

https://brainly.com/question/506926

#SPJ7

Inside a car that was at 273 K, a bottle with a pressure at 100,000 pascals warms up to 350 K. If the volume of the bottle remains constant, what is the pressure, in pascals, inside the hot water bottle!

Answers

Answer:

128.205.1

Explanation:

Plz help plllzzzzzzzz

Answers

im trying to answer but it won’t let me:(

I need help on this question

Answers

Answer:

at rest because time is passing and speed is still at 0

Explanation:

A whale travels 112 meters at 14 m/s How long does this take?

Answers

8 seconds, because if you use the formula distance divided by speed it would give you the time. So, if you divide 112 by 14 your answer would be 8. Hope this helped. Mark as brainliest if you can pls?

Answer:

8

Explanation:

112meters divided by 14

Which statements accurately describe matter

Answers

I hope it is helpful for you ...

Two bodies made of the same material have same external dimension and appearance, but one is compact solid and other is hollow. When they heated for the same temperature range, is the overall volume expansion the same or different? Explain.

Answers

Answer:

Different

Explanation:

The hollow one will expand even more making it have a larger volume then the solid one so they are different

A car initially traveling at 25 m/s speeds up to 60 m/s under a uniform acceleration of 5.0 m/s2 to avoid being hit by another car. How long does it take the car to speed up and get out of the way? Show your work.

Answers

Answer:

The car takes 7 seconds to speed up and get out of the way

Explanation:

Constant Acceleration Motion

It's a type of motion in which the velocity of an object changes uniformly over time.

Having a as the constant acceleration, vo the initial speed, vf the final speed, and t the time, the following relation applies:

v_f=v_o+at

Using the above equation we can solve for t:

[tex]\displaystyle t=\frac{v_f-v_o}{a}[/tex]

The car has an initial speed of vo=25 m/s and ends up at vf=60 m/s with an acceleration of a=5 [tex]m/s^2[/tex].

Given all the appropriate data, calculate t:

[tex]\displaystyle t=\frac{60-25}{5}[/tex]

Calculating:

[tex]\displaystyle t=\frac{35}{5}[/tex]

t = 7 seconds

The car takes 7 seconds to speed up and get out of the way

Four examples of second class levers​

Answers

Answer:

they are :

Explanation:

wheelbarrow bottle opener an oar

Question 2 of 10
Which of the following careers would physicists be least qualified to perform,
based on their training?
A. Nuclear engineer
B. Solar panel designer
C. Research lab manager
D. Gardener

Answers

Answer:

a and d

Explanation:

a because a nuclear engineer is more on explosions which links to chemistry and d because Gardner is irrelevant

d is the right one bc it’s gardening

What is the potential energy of a rock that weighs 10.0 kg and is sitting on top of a hill 300 meters high?

Answers

PE = mgh, g= 9.8 m/s^2
10 kg * 9.8 m/s^2 * 300 m
= 29400 J

The potential energy of a rock that weighs 10.0 kg and is sitting on top of a hill 300 meters high is 29400J

POTENTIAL ENERGY:

Potential energy refers to the energy due to the position of an object. It can be calculated by using the following formula:

P.E = m.g.h

Where;

m = mass of the rock

g = gravitational force of Earth (9.8m/s²)

h = height (m)

According to this question, a rock weighs 10.0 kg and is sitting on top of a hill 300 meters high. The potential energy can be calculated as follows:

P.E = 10 × 9.8 × 300

P.E = 29400J

Therefore, the potential energy of a rock that weighs 10.0 kg and is sitting on top of a hill 300 meters high is 29400J.

Learn more: https://brainly.com/question/15613166?referrer=searchResults

A) 750gm
11. Ifa rectangular solid box of aluminum is heated, which of the following is not true?
A) Its mass remains constant
Cits density increase
B) Its volume increase
Do none of the above​

Answers

Given :

A rectangular solid box of aluminum is heated.

To Find :

Which of the following is not true.

A) Its mass remains constant

C) its density increase

B) Its volume increase

D) none of the above​

Solution :

We know, when an object is heated it expands.

Objects expands means that the volume increases but mass remains same by conservation of mass.

Since mass remains constant and volume increases.

So, density will decrease.

Hence, this is the required solution.

Which of the following is NOT a way that a machine makes work easier to do?
A. Change the size of a force
B. Change the type of force
C. Change the direction of the force
D. Change distance a force acts

Answers

Answer:

c

Explanation:

ur changing the way it move not to make it easier

The direction of the force, has nothing to do with how the machine will work easier. The correct option is C

A machine is any devices that make work easier. An ideal machine takes in small effort to overcome large load.

Since work has to be done in a machine, and work is the product of force and perpendicular distance, for a machine to work easier, the work done will depend  on size of the force applied, the type of force applied, and also, the magnitude of the distance involved.

The direction of the force, has nothing to do with how the machine will work easier. Therefore, the correct option is C

Learn more here : https://brainly.com/question/19546590

is it true that scientific theories and scientific laws both describe observed events??? provide evidence!!!!! only 2 people could answer so if you can't then comment and provide evidence thank you very much!!!!!!

Answers

Answer:

I'm not positive but I think the answer is Yes, because both scientific laws and theories are based on evidence.

Explanation:

Sorry I don't have notes on this, hope this helps! :)

What is the final speed of an object that starts from rest and accelerates uniformly at 3.0 meters per second2 over a distance of 6.0 meters? (1) 8.0 m/s (2) 6 m/s (3) 16 m/s (4) 64 m/s

Answers

Answer:

16 m/s sir

Explanation:

because i am in collage

I WILL MARK BRAINLIEST!!ASAP!!! Wet Lab - Coulomb's Law lab from edge!!

Answers

Answer:

idek to be honest

Explanation:

Help with what?????????

You are traveling down the highway when you notice a cop 200 meters ahead of you. For the next 5 seconds, you step on the bake to avoid a speeding ticket. The brake causes an acceleration on your car of -2.0 m/s^2.
What is the time it takes?
What is the displacement of your car?
What is the acceleration of your car?
Write the equation you will use to solve the problem.
What was your initial velocity?

Answers

Answer:200 5 -20 = v=323

Explanation:

A 10 V fan with a current of 2 A is turned on for 30 seconds. Calculate the energy transferred in joules,

Answers

Answer:

E = 600 J

Explanation:

Given that,

Voltage, V = 10 V

Current, I = 2 A

Time, t = 30 s

We need to find the energy transferred. Energy transferred is calculated as follows :

[tex]E=I^2Rt[/tex]

Ohm's law, V = IR, R = V/I

[tex]E=I^2\times \dfrac{V}{I}\times t\\\\E=IVt\\\\E=2\times 10\times 30\\\\E=600\ J[/tex]

So, 600 J of energy is transferred.

Answer:600J

Explanation:

What is the speed in kilometers per hour of a 27.78m/s baseball pitch?

Answers

Answer:

100.008 km/h

Explanation:

multiply the speed value by 3.6

different between si unit and derived unit​

Answers

Answer:

There are seven base SI units corresponding to different parameters and are considered independent of each other. Derived units are derived from these 7 base units. Derived units are dependent on the base units and are not independent of each other. For example, let us derive the SI units for force. By Newtons Second Law of Motion, the force is same as the product of mass and acceleration of a body. that is, force = mass x acceleration. Also, acceleration is defined as the rate of change of velocity. And velocity is defined as the rate of change of displacement. Thus, force = mass x acceleration = mass x dv/dt = mass x dt2 Mass has SI units of kg, distance is measured in m and t has the SI unit of second. Thus, Sl unit of force is kg.m/s^2 (also known as Newton).

A satellite of mass 1000kg is in a circular orbit around a planet. The centripetal acceleration of the satellite in its orbit is 5m/s^2. What is the gravitational force exerted on the satellite by the planet?

A. 0N
B. 200N
C. 5000N
D. 10000N

Answers

Answer: 5000N

Explanation:

The basic principle of a circular orbit is that Fg = m × ac, so as we have the mass and the centripetal acceleration (also called normal acceleration) we just have to operate. Fg = 1000kg × 5m/s² = 5000N

The gravitational force exerted on the satellite of mass 1000 kg moving in a circular orbit with a centripetal acceleration of 5 m/s² by the planet is 5000 N (option C).  

The gravitational force exerted on the satellite by the planet will be equal to the planet's gravity, which is equal to the centripetal force, so:

[tex] F_{g} = F_{c} = ma_{c} [/tex]

Where:

m: is the mass of the satellite = 1000 kg

[tex]a_{c}[/tex]: is the centripetal acceleration = 5 m/s²

The, the force acting on the satellite is:

[tex] F_{c} = ma_{c} = 1000 kg*5 m/s^{2} = 5000 N [/tex]

Therefore, the gravitational force exerted on the satellite by the planet is 5000 N (option C).

Learn more here:

https://brainly.com/question/11332442?referrer=searchResultshttps://brainly.com/question/24783651?referrer=searchResults

I hope it helps you!

How did Robert Whittaker change classification?

He created an organizational hierarchy.
He classified organisms as plants or animals.
He added the Phylum and Family levels.
He reorganized life into five kingdoms.

Answers

He reorganized life into five kingdoms

Answer:

d

Explanation:

Other Questions
Which property of water allows it to moderate the temperature of nearby areas of land by resisting temperature changes? How is this important for living organisms? If nitrogen and hydrogen combine in a combustion reaction, what would the product of the reaction be?CH4 + 2O2 ____2 + 2H2O there are 4 circles and 16 squares. What is the simplest ratio of circles to total shapes? According to most scholars, the very first humans to came to North America from Asia around 20,000 years ago. The rate of 225 mi in 7 hr written as a unit rate Multiply 986 and 19 together. Round to the nearest hundredth when necessary. In your own idea, how rational choice theory helps you to be rational in decision making ? All of the following are characteristics of drug cartels except __________. A.they often use murder and violence to get what they wantB.they control the trade of illegal drugs in a regionC.they are extremely organizedD.they are always small groups composed of just a few people What is the most effective way to identify improvement opportunities for value log You discover a binary star system in which one member is a15MSun main-sequence star and the other star is a 10MSun giant. How do we believe that a star system such as this might have come to exist? 3Mark placed a ladder against a wall. The bottom of the ladder was 5 feet away from the wall. Find the height of the wall.Ladder10 feetWall5 feet Consider the line y = 5x-7.Find the equation of the line that is perpendicular to this line and passes through the point (2. 5).Find the equation of the line that is parallel to this line and passes through the point (2.-5). Which of the following is the best definition of an opinion?a. Information that cannot be proven true or false. c. Something that is not researched,b. Information that is incorrect.d. An argument. 61 meters = _____ feet I'LL GIVE BRAINLIEST! The process of desalination removes salt from seawater using condensation methods or filtration. Which of the following is least likely to be a problem for widespread use of desalination? A. To be economical, desalination plants must be build on coastlines B. Desalination uses large amounts of energy C. There is a shortage of seawater to use for desalinationD. Desalination is relatively slow Under the ___________ the United States was weak and divided. The _________ created a stronger federal government . Last year Jeremy weighed 70 bounds this year he weights 84 pounds by what percent did Jeremy weights increase from last year to this year (I NEED HELP WITH THIS) What happened because slave owners feared resistance by slaves?A. People formed antislave militias.B. Southern plantation owners started to sell their slaves.C. Many people moved to the North.D. States passed slave codes. how goes painting transcend from period to period? Roberta is taking the final course in the fourth semester of the Veterinary Technician program. When she reads the final project instructions, she realizes she wrote a paper about the same topic in one of her second-semester courses. Since she's very busy and close to finishing her degree, since the original paper got an A, she wants to submit the same paper for her final project. Can Roberta submit the same paper?