PHYSICS MIDDLE SCHOOL

Which of the following is associated with fusion but not fission? A. Radiation
B. Radioactive waste
C. Sunlight

Answers

Answer 1
Answer:

Answer:

sunlight

Explanation:

thought it was uranium fuel lol

Answer 2
Answer:

Answer:

B

Explanation:

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What happens to the density of ocean water when salinity increases? A. It increases. B. It decreases. C. It becomes variable. D. It doesn't change.
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Find the mechanical advantage of a ramp that is 6.0 m long and 1.5 m tall.

Answers

The mechanical advantage of a ramp that is 6.0 m long and 1.5 m tall. we can easily take any object to height of 6 m.

What is gravitational Potential Energy ?

Gravitational potential energy is an energy acquired by an object due to a change in its height when it is present in a gravitationalfield. It is denoted by P or U. and it its expressed in joule.  Gravitational potential energy is given by U = mgh where m is the mass of the object, g is acceleration due to gravity and h is the height.

when we take an object of mass m to a certain height in the field of gravitation, we can say that body has potential energy and we release that body from that height, it falls.

Ramp of 6.0 m long and 1.5 m tall is that there will be angle made by the inclination is 14.4°. Mechanical advantage of a ramp is, it is used for  transportation of heavy objects to a certain height at certain distance. It reduces physical efforts and make our task faster. when we have to transport lots of object to a certain height, when we put objects on the ramp which has motor and upper part of the belt rotates, it will easily get transported to that height without physical efforts. Escalator is also a type  ramp. Ramp which has no rotator, we have to push objects on the ramp to that height.

Hence these are advantages of a ramp.

To know more about Ramp, click :

brainly.com/question/13492520

#SPJ3.

Answer: 4.0

Explanation:

What is the voltage in a circuit if the current is 6.2 A and the resistance is 18 ohms

Answers

We already know the formula:
Voltage = Current * Resistance
In the given question, there are numerous information's that are already given.
Current = 6.2 A
Resistance = 18 ohms
Then
Voltage = 6.2 * 18 Volts
             = 111.6 Volt
So, the voltage in the circuit will be 111.6 volts. I hope it helps you.

If you are doing a USA TEST Prep:

D)  111.6 V

The speed of the cat

Answers

You awser is c to the question

1. The force between a pair of charges is 100 newtons. The distance between the charges is 0.01 meter. If one of the charges is 2 u 10-10 C, what is the strength of the other charge?2. The force between two charges is 2 newtons. The distance between the charges is 2 u 10-4 m. If one of the charges is 3 u 10-6 C, what is the strength of the other charge?

Answers

Answer:

1. Q = 5.56 * 10^(-3) C

2.Q = 2.97 * 10^(-12) C

Explanation:

1. Electrostatic force is given as:

F = (kqQ)/(r^2)

where k = Coulombs constant

q = charge of first charge

Q = charge of the second charge

r = distance between them

From the question:

F = 100 N

q  = 2 * 10^(-10) C

r = 0.01 m

We need to find Q.

From the formula of force, we have that Q is:

Q = (Fr^2)/(kq)

Q = (100 * 0.01^2)/(8.99 * 10^9 *2 * 10^(-10)) \n\n\nQ = (0.01)/(1.798)\n \n\nQ = 0.00556 C = 5.56 * 10^(-3) C

This is the charge, Q, of the second charge.

2. From the question:

F = 2 N

q  = 3 * 10^(-6) C

r = 2 *10^(-4) m

We need to find Q.

Using the same formula for Q as in 1. above, we have that:

Q = (2 * (2 *10^(-4))^2)/(8.99 * 10^9 *3 * 10^(-6)) \n\n\nQ = (8 * 10^(-8))/(26970)\n \n\nQ = 2.97 * 10^(-12) C

This is the charge, Q, of the second charge.

Answer:

(1)  4.4835*10^(17)C

(2)2.9748*10^(-12)C

Explanation:

Force Between two charges is give by.

F=k(Q_1 *Q_2)/(r^2) , here k is called coulomb constant and has value = 8.967*10^9Nm^2/C.

(1) case, F =100N, r = 0.1m and Q_1=2*10^(-10)C substituting these values in above equation and solving for unknown gives us.

Q_2 = 4.4835*10^(17)C.

(2) Case, F = 2N, r = 2*10^(-4)m and Q_1=3*10^(-6)C.

again by substituting these in above equation and solving for unknown gives us.

Q_2=2.9748*10^(-12)C.

A SI unit used to measure force, equal to less than one-quarter of a pound, is the what

Answers


The SI unit of force is the Newton.

1 newton is the force that accelerates a 1 kilogram mass
at the rate of 1 meter per second².

1 pound of force is equivalent to roughly  4.448 newtons.

(1 newton is equivalent to roughly  0.225  pounds of force.)

What circuit that has only one path for the
current to follow?

Answers

Answer:

Series circuit

Explanation:

By definition series circuit is a closed circuit in which the flow of electric current follows only one path.

In a simple electrical circuit (which is a series circuit) where electric cell is the source of power, each component is connected in such a way that there is only one pathway current flows from the positive terminal(+) round to the negative terminal(-) via the external circuit.

Current having only one pathway to flow means that when one of the components is removed, there will be no current flow.
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