Questions from College Physics

Q: By what factor does the volume of a cube increase if

By what factor does the volume of a cube increase if the length of the edges is doubled? (a) 16 (b) 8 (c) 4 (d) 2

Q: 55 mi/h is approximately (a) 90

55 mi/h is approximately (a) 90 km/h (b) 30 km/h (c) 10 km/h (d) 2 km/h

Q: A homeowner is told that she must increase the height of

A homeowner is told that she must increase the height of her fences 37% if she wants to keep the deer from jumping in to eat the foliage and blossoms. If the current fence is 1.8 m high, how high mus...

Q: Samantha is 1.50 m tall on her eleventh birthday and

Samantha is 1.50 m tall on her eleventh birthday and 1.65 m tall on her twelfth birthday. By what factor has her height increased? By what percentage?

Q: A study finds that the metabolic rate of mammals is proportional to

A study finds that the metabolic rate of mammals is proportional to m3/4, where m is total body mass. By what factor does the metabolic rate of a 70 kg human exceed that of a 5.0 kg cat?

Q: On Monday, a stock market index goes up 5.00

On Monday, a stock market index goes up 5.00%. On Tuesday, the index goes down 5.00%. What is the net percentage change in the index for the two days? Explain why it is not zero.

Q: Find the product below and express the answer with units and in

Find the product below and express the answer with units and in scientific notation with the appropriate number of significant figures:

Q: Rank these measurements in order of the number of significant figures

Rank these measurements in order of the number of significant figures, from least to greatest. (a) 7.68 g (b) 0.420 kg (c) 0.073 m (d) 7.68 × 105 g (e) 4.20 × 103 kg (f) 7.3 × 10−2 m (g) 2.300 × 104...

Q: Given these measurements, identify the number of significant figures and rewrite

Given these measurements, identify the number of significant figures and rewrite in standard scientific notation. (a) 0.005 74 kg (b) 2 m (c) 0.450 × 10−2 m (d) 45.0 kg (e) 10.09 × 104 s (f) 0.095 00...

Q: Solve the following problem and express the answer in meters with the

Solve the following problem and express the answer in meters with the appropriate number of significant figures and in scientific notation: