Answer:
0.015kgcm^3
Explanation:
density = mass / volume
density = (30/1000) / 2
= 0.015kgcm^3
pls help asap. will mark as brainliest if correct
Answer:
Hey mate, here is your answer answer. Hope it helps you
Explanation:
1. If a worker has come into contact with electricity the worker may not be able to remove themselves from the electrical source. The human body is a good conductor of electricity. If you touch a person while they are in contact with the electrical source, the electricity will flow through your body causing electrical shock. Firstly attempt to turn off the source of the electricity (disconnect). If the electrical source can not readily and safely be turned off, use a non-conducting object, such as a fibreglass object or a wooden pole, to remove the person from the electrical source.
2. C- Electrical energy.The term electrical activity means that the food itself has the power to generate electric energy that persists some period of time. This work presents a purely renewable energy as energy comes. the zinc reacts with food tissue.
Explain the effect of changing the temperature on pressure in terms of velocity and force of particles
Answer:
As the temperature increases, the average kinetic energy increases as does the velocity of the gas particles hitting the walls of the container
Explanation:
Which system of measurement do you prefer: metric or customary? Explain why?
This is seince not physics
I give brainlist! #20points
Answer:
The customary system is the system of measurement that is primarily used in the U.S. units in this system include the inch, foot, mile, pound, and also the cup.
The metric system is the system of measurement primarily used in science and in countries outside of the U.S. Units in this system include the meter, liter, and also gram.
Explanation:
I hope this works. :DD
I prefer using Customary system because its already in our country and easier for use because its easier for us to learn
Two particles A and B move at a constant speed in circular paths at the same angular speed ω. Particle A's circle has a radius that is the length of particle B's circle. What is the ratio vA/vB of their translational speeds?
Answer:
2:1
Explanation:
It is given that,
Two particles A and B move at a constant speed in circular paths at the same angular speed ω.
Particle A's circle has a radius that is the length of particle B's circle.
We need to find the ratio of vA/vB of their translational speeds.
As the angular speed is same. The relation between angular and linear speed is given by :
[tex]\omega=\dfrac{v}{r}\\\\\omega_A=\omgega_B\\\\\dfrac{v_A}{r_A}=\dfrac{v_B}{r_B}[/tex]
As [tex]r_A=2r_B[/tex]
So,
[tex]\dfrac{v_A}{2r_B}=\dfrac{v_B}{r_B}[/tex]
[tex]\dfrac{v_A}{v_B}=2[/tex]
So, the ratio of their translational speeds is 2:1.
If you have two wires made out of the same material and the same thickness, one is 3-inches long and one is 6-inches long, which one has the greater resistance?
plz help!!
Answer:
The 3-inch wire has greater resistance.
Explanation:
The only difference between the wires is their length. According to the formula for resistance, the longer wire will have greater resistance.
What is Ohm's law?Ohm's law is a fundamental law of electrical circuits that describes the relationship between voltage, current, and resistance in a conductor. It states that the current flowing through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance between them. This law is named after Georg Simon Ohm, a German physicist who first stated it in 1827.
The mathematical equation for Ohm's law is:
V = IR
Where:
V is the voltage or potential difference measured in volts (V)
I is the current flowing through the conductor measured in amperes (A)
R is the resistance of the conductor measured in ohms (Ω)
This equation states that the voltage (V) applied across a conductor is equal to the product of the current (I) flowing through the conductor and the resistance (R) of the conductor.
In other words, Ohm's law tells us that if we increase the voltage applied to a conductor, the current flowing through it will also increase, assuming the resistance stays constant. Similarly, if we increase the resistance of a conductor, the current flowing through it will decrease, assuming the voltage stays constant.
Ohm's law is an essential concept in electrical engineering and is used extensively in the design and analysis of electrical circuits. It allows us to predict how changing the voltage, current, or resistance in a circuit will affect the other two variables.
Here in the question,
Assuming that the wires have the same cross-sectional area and are made of the same material, the longer wire will have greater resistance. This is because the resistance of a wire is directly proportional to its length and inversely proportional to its cross-sectional area.
The resistance of a wire can be calculated using Ohm's law: R = V/I, where R is resistance, V is voltage, and I is current. The resistance can also be calculated using the formula: R = ρL/A, where ρ is the resistivity of the material, L is the length of the wire, and A is the cross-sectional area of the wire.
Since the wires are made of the same material and have the same thickness, their cross-sectional areas will be the same.
Therefore, the only difference between the wires is their length. According to the formula for resistance, the longer wire will have greater resistance.
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Check the See Inside Magnet box. Describe what you see.
Answer:
where is it??
Explanation:
Answer:
The bar magnet appears to be made up of smaller magnets, each with a red end and a white end.
Explanation:
Edmentum Answer
How much kinetic energy does a 2 kg book falling out of the backpack with a velocity of 4 m/s have?
Answer:
E = 16 J
Explanation:
Given that,
Mass of a book, m = 2 kg
Velocity of the book from the backpack, v = 4 m/s
We need to find the kinetic energy of the book falling out of the backpack. Due to the motion of the object, kinetic energy is possessed by it. It can be given by :
[tex]E=\dfrac{1}{2}mv^2\\\\=\dfrac{1}{2}\times 2\ kg\times (4\ m/s)^2\\\\=16\ J[/tex]
So, the kinetic energy of the book is 16 J.
Cual es la aceleracion en metros por segundo al cuadrado de un carro que cambia de velocidad de noventa kilometros por hora a veinte metros por segundo al cuadrado en seis segundos
Answer:
El carro decelera a una tasa de 0.833 metros por segundo cuadrado.
Explanation:
Inicialmente, convertimos la velocidad inicial del carro a metros por segundo:
[tex]v_{o} = 90\,\frac{km}{h}\times \frac{1}{3600}\,\frac{h}{s}\times 1000\,\frac{m}{km}[/tex]
[tex]v_{o} = 25\,\frac{m}{s}[/tex]
Si asumimos que el carro decelera de manera uniforme, entonces empleamos la siguiente ecuación cinemática para determinar la aceleración ([tex]a[/tex]), medida en metros por segundo al cuadrado:
[tex]a = \frac{v-v_{o}}{t}[/tex] (1)
Donde:
[tex]v_{o}[/tex], [tex]v[/tex] - Velocidades inicial y final, medidas en metros por segundo.
[tex]t[/tex] - Tiempo, medido en segundos.
Si sabemos que [tex]v_{o} = 25\,\frac{m}{s}[/tex], [tex]v = 20\,\frac{m}{s}[/tex] y [tex]t = 6\,s[/tex], entonces la deceleración del carro es:
[tex]a = \frac{20\,\frac{m}{s}-25\,\frac{m}{s} }{6\,s}[/tex]
[tex]a = -0.833\,\frac{m}{s^{2}}[/tex]
El carro decelera a una tasa de 0.833 metros por segundo cuadrado.
Exercising and eating healthy will help you have a good body composition.
A.
True
B.
False
Answer: A
Explanation:
Answer:
True
Explanation:
Nutrition and exercise are critical for improving body composition.
A 950 kg truck accelerates from rest to 15 m/s in 2.3 seconds as it drives down a rough road. If the forward force of the engine is 7000 newtons, determine the force of friction between the tires and the road. 804 N 6,196 N 7,250 N 14,250 N
Answer:
804 N
Explanation:
We are given;
Mass; m = 950 kg
Initial velocity; u = 0 m/s
Final velocity; v = 15 m/s
Time; t = 2.3 s
Engine force; F_e = 7000 N
From Newton's first equation of motion;
v = u + at
15 = 0 + 2.3a
a = 15/2.3
a = 6.5217 m/s²
From Newton's second law of motion and since friction always opposes motion, we have;
F_e - F_f = ma
Where F_f is frictional force.
Thus;
F_f = F_e - ma
F_f = 7000 - (950 × 6.5217)
F_f ≈ 804 N
Direction is a straigt path an object moves.
True
False
Answer:
Direction is a path an object moves in general, so true
Explanation:
Question 2 How can an induced magnet be made stronger? adding more secondary coils O adding more induction O adding more primary coils
Answer: adding a secondary coils
Explanation:
You can make an electromagnet stronger by doing these things: wrapping the coil around a piece of iron (such as an iron nail) adding more turns to the coil. increasing the current flowing through the coil.
Induced magnet be made stronger,by adding more secondary coils.
Increasing the magnetic field applied to the magnetizable material in turn makes its own magnetic field stronger. Similarly, wrapping with thicker wire has the same effect, but by increasing the current. Like a widening river, a thicker conductor allows more current through.
What is secondary coil ?"Coil such that current is induced in it by passing a current through the primary coil. secondary winding, secondary. coil - reactor consisting of a spiral of insulated wire that introduces inductance into a circuit."
What is magnetic field ?"A magnetic field is a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials. A moving charge in a magnetic field experiences a force perpendicular to its own velocity and to the magnetic field."
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The pressure exerted by a block of wood is 40 pa. If the force exerted by the block is 80N what is the surface area of the wood?
Answer:
Pressure = 40Pa
Force = 80N
Surface area = ?
Pressure = Force/Surface area
hence Surface area = Force/Pressure
Surface area = 80N/40Pa = 2m^2.
An object with an initial speed of 4.0 meters per second accelerates uniformly at 2.0 meters per second squared in the direction of its motion for a distance fof 5 meters. What is the final speed of the object
Answer:
6 m/s.
Explanation:
From the question given above, the following data were obtained:
Initial velocity (u) = 4 m/s
Acceleration (a) = 2 m/s²
Distance (s) = 5 m
Final velocity (v) =?
The final velocity of the object can obtained as shown below:
v² = u² + 2as
v² = 4² + (2 × 2 × 5)
v² = 16 + 20
v² = 36
Take the square root of both side.
v = √36
v = 6 m/s
Therefore, the final speed of the object is 6 m/s.
The final speed of the object as it accelerates uniformly in the direction of its motion is 6m/s.
Given the data in the question;
Initial speed; [tex]u = 4.0m/s[/tex]Acceleration; [tex]a = 2.0m/s^2[/tex]Distance; [tex]s = 5m[/tex]Final speed; [tex]v = \ ?[/tex]
To determine the final speed of the object, we use the third equation of motion:
[tex]v^2 = u^2 + 2as[/tex]
Where v is the final speed or velocity, u is the initial velocity, a is the acceleration and s is the distance covered.
We substitute our given values into the equation
[tex]v^2 = [(4.0m/s)^2] + [ 2\ *\ 2.0m/s^2\ *\ 5m ]\\\\v^2 = 16m^2/s^2 + 20m^2/s^2\\\\v^2 = 36m^2/s^2\\\\v = \sqrt{36m^2/s^2} \\\\v = 6m/s[/tex]
Therefore, the final speed of the object as it accelerates uniformly in the direction of its motion is 6m/s.
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To open and close a circuit, a
can be used.
How long does it take for the Earth to make a complete revolution around the sun?
365 days so a year basically
30 points plz help ill do anything... literally anything.
A car moving at 10 m/s slows to a stop.
It moves 25 meters forward while braking.
1. How much time does it take to slow to a stop? Explain how you found your answer.
2. What is its braking acceleration? Explain how you found your answer.
Answer:
1. 2.5s
Explanation:
1. For time, divide Distance / speed
25m / 10
=2.5s
What is Burgers????????????????????
Answer:
food
Explanation:
its is a fast food option or homemade option of ground beef made into a patty and put on buns
Jocelyn is running for the U.S Senate. What is one of the qualifications for office she must meet?
have resided in the United States for at least 10 years
have served as Governor of the state she will represent.
reside in the state she will represent
have been a member of the U.S. House of Representatives
Answer:
b
Explanation:
Answer:
Reside in the state she represents.
Explanation:
Every position in government needs at least one qualification. she needs to reside in the state she represents because U.S Senators represent their state witht he views and stuff.
Hope this helps :)
What's the equation for impulse? (physics)
Answer:
F • t = m • Δ v
Explanation:
How do you think each firefighting method affects the chemical reaction involved in wildfires
Answer:
I think it effects it by how the fire being a chemical reaction since it has gas in it, it effects it by how the water pputs it out, and it stopping the chemical reactions
Explanation:
A Ford F-150 truck is driving on a dirt road and a deer steps out in front of the truck. The truck is moving at 22 m/s and stops in 4.5s. What is the rate of acceleration of the truck?
Answer:
4.8
Explanation:
who wants to be freinds
Hello there, Goodmorning and God Bless...Here is your answer to your following question:
yessss i do!!!
Answer:
why not
Explanation:
If the cause of a disease is considered
multifactorial, that means
Answer:
B) the disease is caused by more than one factor
Explanation:
Just did the assignment:)
What is the mechanical advantage of a lever that is 20 meters
long and uses 10,200 N to lift a 6,000-kg dump truck 3 meters
into the air?
Answer:
5.765
Explanation:
Answer:
5.765
Explanation:
1-5 please help will mark brainliest
Answer:
the deficiency is the target audience of the most important and important the target audience of this advertisement is to provide the target of the best of all time and k to detect and k a solution please send emote and
A star has right ascension of 5 hours. Which of these statements is correct about the star?
A. It is five hours to the west of zero hours right ascension.
B. It is five hours to the east of zero hours right ascension.
C. It is five hours to the north of zero hours right ascension.
D. It is five hours to the south of zero hours right ascension.
Answer:
I believe the answer is A, it is to the west as the right ascension is only east and west
Explanation:
When i took the quiz, I put east and had gotten it incorrect.
Thirty-five (35.0) mL of ozone (O3) is stored at a temperature of 285 K and a pressure of 150.0 Pa. If the pressure is decreased to 125 Pa, what will be the new temperature?
Answer:
Temperature T2 = 237.5 K
Explanation:
Given:
Volume = 35 ml
T1 = 285 k
P1 = 150 pa
P2 = 125 pa
Find:
Temperature T2
Computation:
P1V/T1 = P2V/T2
150(35) / 285 = 125(35) / T2
Temperature T2 = 237.5 K
A 700 kg car makes a turn going at 30 m/s with radius of
curvature of 120 m. What is the force of friction between the car's tires and the road?
Answer:5250 N
Explanation: ig:iihoop.vince
The force of friction between the car's tires and the road is 5250 N
Centripetal force is the force that is perpendicular to an object moving in circular motion. It is given by:
F = mv²/r
where m is the mass of object, v is the velocity and r is the radius of circle.
Given that m = 700 kg, v = 30 m/s, r = 120 m, hence:
F = mv²/r = 700 * 30²/120 = 5250 N
The force of friction between the car's tires and the road is 5250 N
The transfer of energy in liquids and gases as groups of molecules move in currents is
Convection
Conduction
Radiation
Convection currents