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Physics
GCSE

Two beakers contain water at room temperature. One contains 200ml, the other 400ml. If both beakers are heated above identical Bunsen burners, which of the two will take longer to boil?

The equation dQ = mcdT tells us how the temperature of an object changes when heat energy dQ is added. In this case the specific heat capacity c is the same for the contents of both beakers since...

Answered by Keita J. Physics tutor
4868 Views

what force does a person have to exert on one side of a seesaw if the other person weighs 70kg and is the same distance away from the pivot (2m) on the other side of the seesaw?

70kg x 9.8 = 686N x 2 = 1372 Nm, as 2m away again, divide by 2 = 868 Newtons

Answered by Marcus B. Physics tutor
1342 Views

Why does a change in depth in water give a far greater difference in pressure than the same change in height in air?

Begin by explain that pressure is described by the amount of force exerted on a given area (N/m2). The force in this equation is given by the weight of everything directly above the point you a...

Answered by Murdo B. Physics tutor
2273 Views

What is the difference between a scalar and a vector?

In physics, a scalar is a quantity of a one value to describe the size of a physical property, such as energy or dis...

Answered by Christopher B. Physics tutor
1466 Views

I throw a ball straight up with an initial velocity of 2m/s. How high is it after a fifth of a second?

assign each variable to a value in s = ut + 1/2at2u = 2m/s t=0.2sa=-9.81m/s2so s = (2 x 0.2) + 1/2(-9.81)(0.2)2so s =

Answered by Henry A. Physics tutor
1698 Views

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