Normally the rate at which you expend energy
during a brisk walk is 3.5 calories per minute.
(a calorie is the common unit of food energy,
equal to 4184.1 joules.)
how long do you have to walk in order to
produce the same amount of energy as in a
candy bar (approximately 280 cal)?
answer in units of min.

An object is 10 cm from the mirror, its height is 1 cm and the focal length is 5 cm. what is the image height? (indicate the object orientation by including the + or - sign with the answer.) hi = cm +1 -1 +10 -10

The motor m applies a time-varying force of f (200 t) n, where t is in seconds. box b with mass 200 kg starts from rest, and the coefficients of kinetic and static friction are 0.2 and us 0.3 the acceleration due to gravity is g 9.8 m/s2 b 300 a) find the time ' when the box starts to move. b) calculate the speed of the crate at 3 s c) calculate the power delivered by the motor at t 3 s

True or false graphs must include scales that increase by the same amount