In Microsoft Excel you should calculate the uncertainty in a straight line fit using the function:

A linear relationship is an equation of the form . A linear relationship is:

Another relationship in physics is that describing the energy obtainable if we convert mass to energy, Einstein's famous where the constant is the speed of light in vacuum. Which of the following correctly expresses this as a proportionality and identifies the constant of proportionality?

Again consider the potential energy stored in a spring,  . What variables could you plot against each other and expect a straight line (For full marks select ALL that work).

The energy stored in a spring which follows Hooke's Law stretched a distance from its normal length is , where is the spring constant and basically describes how stretchy a spring is.

Which of the following choices correctly writes this a proportionality and identifies the constant of proportionality.

A ball rolls to the right at 5m/s along a 1.5m high table. It rolls off the edge and falls. (Air

resistance is negligible). What is the initial vertical velocity as it falls off the table?

A

ball rolls to the right at 5m/s along a 1.5m high table. It rolls off the edge

and falls. (Air resistance is negligible). How long does it take the ball to

fall to the ground? Give your answer to two decimal place in units of s. Do not include units in your answer i.e. you would write 10 s as 10.

Enter the code displayed on the screen in Pace Studio? (Note this is case sensitive, provide your answer all in lower case and check your spelling)

For an experiment in this unit, you need to calculate the mass of a cube. You measure the length of one edge of the cube to be 7.4 ± 0.1 cm. The density of the cube is 8.0 ± 0.2 g cm^-3. What is the absolute uncertainty in the mass of the cube (to 1 sig fig) calculated from these values?

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