A 50N crate is lifted 0.86m from the ground then is allowed to drop losing 15 J of energy. What is the new height of the crate?

We have that the miss  distance  is mathematically given as

h= 0.76 m

Distance of miss

Question Parameters:

Generally the equation for the Time is mathematically given as

   t = d / v

Therefore

[tex]t = \frac{73.0 m}{ 185 m/s}[/tex]            

 t = 0.39s              

Hence      

x = 1/2 g t^2    

x = 1/2 *9.8 * 0.39 s ^2        

x= 0.76 m  

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Answer:

The easiest way to identify which variable in your experiment is the Independent Variable (IV) and which one is the Dependent Variable (DV) is by putting both the variables in the sentence below in a way that makes sense.

“The IV causes a change in the DV. It is not possible that DV could cause any change in IV.”

Explanation:

Answer:

a = G M / R^2     gravitational acceleration

a =  ω^2 R      acceleration due to centripetal force

a2 / a1 = ω2^2 / ω1^2    the one with the greatest gravitational acceleration would require the greatest speed

a2 / a1 = M2 / M1    using the first equation - since M is greater for earth - then the spacecraft for earth would be moving faster - using the term radii as distance from center

Note that the acceleration of an object at the surface for Mars is less that on-half of that of earth - so at zero height above the surface the spacecraft on earth would still be moving faster

Answer:

108

Explanation:

because F=ma

which is 90 × 1.2

= 107N

Answer:

Design #3 seems to best fit the requirements (2 sq m).

The others are too bulky.

Answer:

Gravity does no work on the Moon

Explanation:

Answer:

In stress strain curve of ductile materials, up to proportionality limit stress and strain are proportional to each other and also elastic in nature. After that proportionality disappears and only elasticity remains. That limit is called elastic limit.

Explanation:

Answer:

You can use a block and an inclined plane (just a tilted board)

Place the block on the plane and gradually increase the angle the plane makes with the horizontal.

Static friction will keep the block in place (no sliding) until the angle between the plane and the horizontal is large enough. The block will now slide but is still under the influence of kinetic friction. Thus static friction is greater than sliding friction.

Answer:

If you put the metal extract into the water there will be no reaction but if you put it into the acid it will liberate H2 (hydrogen gas) Hence it is the difference

Explanation:

this should sum it down

Answer:

15 cups of flour to make 60 cookies

Explanation:

first, do 60 divided by 25.

then we MULTIPLY the recipe by 2.5

24x2.5=60 amount of cookies

4x2.5=10 cups of sugar

6x2.5=15 cups of flour

15 cups of flour to make 60 cookies

:DDD

Answer:

15 cups of flour

Explanation: 60 times 6 = 360

24x=360

360 divided by 24 is 15.

Answer:

Isaac Newton

Explanation:

Because i learned this in school

Answer:

matter

Explanation:

Hence the complete statement will be, " Sensation " occurs in the body while perception occurs in the brain.

Option D

Generally, senses acquire facts from the surroundings using the sensory receptors which eventually feed into neural inputs.

These neural impulses are then dispatched to the brain there it is prepared and interpreted for in addition evaluation which is recognized as perception.

Therefore,we have the follow statements to be true

Sensation occurs in the body

Perception occurs in the brain

Option D

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Answer:

The ball hit with 12N

Explanation:

Just took the quiz and got it right

Answer:

A

B

C

are the correct options

vf²=vi²+at

t = 8 min = 480 s

decelerates = a = - (negative sign)

input the value:

160²=vi²-0.5 x 480

25600 = vi²-240

25840 = vi²

vi = 160.75 m/s

The initial velocity of the aircraft is equal to 400 m/s when it decelerates at 0.5 m/s².

The equations of motion have described the behavior of a physical system in which motion is a function of time. The equations of motion describe a set of mathematical functions in terms of dynamic variables and the relationship between the velocity, time, displacement, and acceleration of a moving object.

The mathematical expressions for three equations of motion can be written as:

[tex]v = u + at\\S = ut +\frac{1}{2} at^2\\v^2-u^2 = 2aS[/tex]

Given, the final velocity of the aircraft,  v = 160 m/s

The time taken by the aircraft, t = 8 min = 480 sec

The de-acceleration of the aircraft, a = -0.5 m/s²

From the first equation of motion, we can find the initial velocity of the aircraft:

[tex]v = u +at[/tex]

160 = u - (0.5) × (480)

u = 160 + 240

u  = 400 m/s

Therefore, the initial velocity of the aircraft is equal to 400 m/s.

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By using what we know about microscopic interactions, we will see that the correct option is:

"The electric field is stronger and is the opposite direction of the gravitational field"

The gravitational field depends on the mass of the proton, while the electric field depends on the charge of the proton. We know that gravity is negligible at such small scales, where the electric and nuclear interactions rule. So for such small particles, electric fields will always be stronger than gravitational fields.

We know that the gravitational force is an attractive force, so the field will point inwards.

In the other hand, the electric force depends on the type of the charge. Two equal chares repel and two opposite charges attract.

In the case of the proton, we have a positive charge, so it will only atract negative charged particles. So the vectors of the field point outwards.

Then we can conclude that the field's directions are opposite.

Then the correct option is:

"The electric field is stronger and is the opposite direction of the gravitational field"

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The equipotential lines round the infinitely long line of charge are concentric circles round the line of charge.

An equipotential line is a line in which the electric potential is constant

So, equipotential lines round the infinitely long line of charge are concentric circles round the line of charge.

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The total work work done on a block by the force of friction is the force of friction times the distance traveled times the cosine of the angle between the friction force and displacement

Work done is measured in joules (J). It is distance moved along the line of action of the force is measured in metres (m)

Work is said to be done when a force acts upon an object to cause a displacement.

Calculating the work done on an object

work done = force × distance

Where;

Work done is measured in joules (J)

Force is measured in newtons (N)

Distance is measured in meters (m)

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Answer:

Frequency=0.39Hz

Explanation:

A pendulum completes 23 full cycles in 58 seconds

A pendulum completes 1 full cycle in 58/23=2.52 seconds

Time taken(t)=2.52 seconds

Now,

Frequency=1/time taken

Frequency=1/2.25

Frequency=0.39Hz

When a pendulum is observed to complete 23 full cycles in 58 seconds. then the period is 2.521739 and the frequency of the pendulum is  0.39655 S⁻¹

It can be defined as the number of cycles completed per second.It is represented in hertz and inversely proportional to the wavelength.

The frequency of a pendulum is the reciprocal of the time period can be given by the following relation

f = 1/T

where f is the frequency

T is the time period  of the pendulum

As given in the problem that a pendulum is observed to complete 23 full cycles in 58 seconds

Then the number of cycles per second is known as the frequency

f = 23/58

f = 0.39655 S⁻¹

As the time period is reciprocal to the frequency

T= 1/f

T = 1/0.39655

T =2.521739

Thus, if 58 seconds pass before a pendulum completes 23 full cycles. then the pendulum's frequency would be  0.39655 S⁻¹, and its period would be 2.521739.

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The velocity ratio of the wedge is 0.1

The load on the soft wood is 300 N.

The velocity ratio of a machine is the ratio of the distance traveled by effort to distance traveled by load.

V.R = distance traveled by effort/distance traveled by load

V.R = 1 cm/ 10 cm = 1/10 = 0.1

The load on the soft wood is calculated as follows;

[tex]\frac{30}{L} = 0.1\\\\L = \frac{30}{0.1} = 300 \ N[/tex]

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Answer:

the faster an object moves the more kinetic it has. the more mass an object has, the more kinetic energy it has.

Answer:

Shangdi or A: Di

Explanation:

Shangdi was considered to be the supreme deity during the Shang dynasty (1600–1046 century BCE), but during the Zhou dynasty (1046–256 BCE) he was gradually supplanted by heaven (tian).

The quantity of charge carried by the plastic tube is -6.08 x 10^-10 C.

Electrons are negatively charged particles that are found in the atom. The magnitude of charge carried by an electron is about -1.6 × 10^-19 C. We must note that the negative sign indicates that the electron is negatively charged.

The quantity of charge carried by the tube is obtained from;

q =ne

q = 3.8 x 10^9 × ( -1.6 × 10^-19 C)

q = -6.08 x 10^-10 C

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Wait what do you mean what is D? I have no idea what your talking about. Well um... D is the fourth letter or the alphabet.

I have anxiety btw so i don't want to be warned it makes me feel weird or scared.

Answer:

moving up positive acceleration

Explanation:

when moving up as you bounce the ball

the speed changes gradually increasing so according to the equation

acceleration =[speed change ] ÷ period when speed change is positive acceleration is also positive , and an greater value

example speed changes 5m/s within 2 seconds throwing the ball upward

(these are assuming values to explain)

acceleration is 5/2 = + 2.5 m/s^2

so this is an positive acceleration

if negative we call deceleration

When a basketball is bouncing and moving up, it has a negative acceleration.

Acceleration is the rate of change of velocity with respect to time. If the velocity of the basketball is increasing in the upward direction as it bounces, the acceleration is directed downward (negative). This might seem counterintuitive at first, but it is essential to understand that acceleration is a vector quantity, which means it has both magnitude and direction.

When the basketball moves upward during its bounce, its velocity is slowing down due to the opposing force of gravity. As it moves against gravity, the magnitude of its velocity decreases until it reaches the highest point (apex) of its bounce, where its velocity momentarily becomes zero. At the apex, the basketball changes direction and starts moving downward, and its velocity increases in the downward direction.

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Answer:

Find two boxes just a bit smaller than the other. The long sides of the box should be less than twice as long as the short side of the boxes. The smaller box should fit inside the larger box with about 1 inch in each direction to spare. The boxes can be cut down so that they fit together properly. Leave the flaps on the boxes. Buy a small sheet of Plexiglas (tm) a little bit smaller than the width and length of the top of the box. You will also need four pieces of cardboard to use for reflectors.

Explanation: