Suppose that 2 j of work are needed to stretch a spring from its natural length of 30 cm to a length of 42 cm. how much work (in j) is needed to stretch it from 35 cm to 40 cm?

What is the rule for placing an ammeter

Which equation is used to determine the density of a substance? D = M/V D = M X V D = V/M D = MV2

Peak hours are time periods in which the maximum number of people travel. a. true b. false

A person jogs 4.0 km in 32 minutes, then 2.0km in 22 minutes and finally 1.0km in 16 minutes. What is the joggers average speed in km per minute?

A uniform electric field with a magnitude of 125 000 N/C passes through a rectangle with sides of 2.50 m and 5.00 m. The angle between the electric field vector and the vector normal to the rectangular plane is 65.0°.

Compare how your weight, mass, and the normal force exerted by the floor change when you are in an elevator that starts from rest and accelerates upward.

When experiencing loss in your life, you are likely to experience grief, but not stress True or False

What is the specific heat of wood?

A certain wave motion has a frequency of 10 cycles / s and a wavelength of 3 m. so its propagation speed is

The planet earth orbits around the sun and also spins around its own axis. 33% part (a) calculate the angular momentum of the earth in its orbit around the sun in kg • m2/s