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padilas [110]
3 years ago
5

When sitting in the tree the cat has a total of 1375J in its Gravitational potential store. What is the maximum amount of energy

that can be transferred when the cat lands on the ground?
Physics
1 answer:
Murrr4er [49]3 years ago
4 0

Answer:

1375J

Explanation:

The gravitational potential/potential energy of the at the top of the tree which is the energy by virtue of its position.

P.E = mgh

mass = m

Acceleration due to gravity = g

height = h

At the top of the tree, the value of h (height) is high resulting in the gravitational potential. When the cat lands on the ground, the value of h is zero, the the gravitational potential would be zero and all the potential energy have been converted to other forms of energy.

Therefore, the total gravitational potential store is equal to the maximum amount of energy that can be transferred which is equal to 1375J.

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Which of the following is an example of a scientific theory? . Select one:. a. Scientists use three mathematical laws to predict
VARVARA [1.3K]

The correct answer is:

D) Scientists agree that there is an amount of attraction between any two objects, called gravity, and can describe the attraction in mathematical terms.

The explanation:

-A scientific theory is an explanation of an aspect of the natural world that can be repeatedly tested, in accordance with the scientific method, using a predefined protocol of observation and experiment.

-theory can imply that something is an unsubstantiated and speculative guess, the opposite of its meaning in science.

-Observation is part of the scientific method, but not the theory. and Experimentation is part of the scientific method, but not the theory.

So, the correct answer is D


5 0
3 years ago
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How much heat is needed to raise the temperature of 4.68kg of lead from 25.0c to 62.0
qwelly [4]

Answer:

22510.8J

Explanation:

Given parameters:

Mass of lead  = 4.68kg

Initial temperature  = 25°C

Final temperature  = 62°C

Unknown:

The heat needed to cause this temperature change = ?

Solution:

To solve this problem, we use the expression below:

       H = m c Ф  

H is the quantity of heat

m is the mass

c is the specific heat capacity

Ф is the temperature change

   So;

 Specific heat capacity of lead  = 130J/kg°C

 Insert the parameters and solve;

   H = 4.68 x 130 x (62 - 25) = 22510.8J

6 0
3 years ago
A solenoid of 2100 turns, area 10 cm2, and length 30 cm carries a current of 4.0 A. (a) Calculate the magnetic energy stored in
nikitadnepr [17]

Answer:

E = 0.1472  J

Explanation:

Given that,

The number of turns in the solenoid, N = 2100

Area of the solenoid, A = 10 cm² = 0.001 m²

The length of the solenoid, l = 30 cm = 0.3 m

Current in the solenoid, I = 4 A

We need to find the magnetic energy stored in the solenoid. The expression for the stored energy is :

E=\dfrac{1}{2}LI^2

Where

L is self inductance of the solenoid,

L=\dfrac{\mu_oN^2A}{l}\\\\L=\dfrac{4\pi \times 10^{-7}\times 2100^2\times 0.001}{0.3}\\\\L=0.0184\ H

So,

E=\dfrac{1}{2}\times 0.0184\times 4^2\\\\E=0.1472\ J

So, 0.1472  J of energy is stored in the solenoid.

3 0
3 years ago
If an element has 20 protons and 20 neutrons in the nucleus of its atoms , what is the mass number of the atom?
Ilya [14]

Answer:

A=z+n

A=20+20

A=40

Explanation:

Not sure if I'm correct but I was taught that mass number is calculated by A=z+n where A is the mass number, z is the proton number and n is the number of neutrons.

8 0
3 years ago
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