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Physics
GCSE

A skydiver is at a height of 10,000 m. Assuming no air resistance, how fast is the skydiver travelling at 9,990 m above the ground?

The skydiver has potential energy at the top of his/her jump, which is transferred to kinetic energy when he/she jumps. The difference in height between the start of the jump and the point at which his/he...

Answered by Christopher B. Physics tutor
1516 Views

Which are the forms of heat you know. Explain them briefly including an example

The most common ways to transfer heat are conduction and convection. Conduction is heat transfer through mollecular collision. The slower speed particles, or colder particles will increase their kinetic e...

Answered by Joao A. Physics tutor
1876 Views

what is the total resistance of 2 resistors each with resistance 2 ohms in parallel?

1/Rt= 1/R1 + 1/R2 The equation for resistors in parrallel. If R1 and R2 are both 2 ohms then 1/Rt = 1/2 +1/2 = 1 so Rt = 1 ohm....

Answered by Hermione W. Physics tutor
1868 Views

A person weighs 620N on Earth. The gravitational constant on Mars is 3.8m/s^2. How much does this person weigh on Mars?

If the person weighs 620N on Earth, their mass is 620/9.8=63.3kg on Earth. Therefore applying F=ma they must weigh 63.3*3.8=240N on Mars.

Answered by Tomas M. Physics tutor
6650 Views

State Newton's 2nd Law, and use this explain the vertical motion of a parachutist in the descent from her plane to Earth.

Newton's second law: Fnet = m.a. The net force (vector) on an object is directly proportional to the product of its mass (sca...

Answered by Akash B. Physics tutor
2894 Views

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