A student pushes a 40-N block across the floor for a distance of 10 m. How much work was applied to move the block?

A.

4 J

B.

40 J

C.

400 J

D.

4000 J

How will you charge a metal sphere by the process of induction?

A football is kicked from a tee at 12 m/s at 72° above the horizontal. What is the flight time of the football? __s

Light that is blue has a wavelength of 4.75 x meters. What is blue light's frequency?

A block of gold has dimensions of 2 cm by 10 cm by 4 cm and its density is 19.3 g/cm3. What is the mass of this block of gold?

What does temperature measure? a. the amount of disorder in a substance b. the average kinetic energy of molecules c. the average potential energy of molecules d. the direction of the moving molecules in a substance

A ferris wheel takes 5 minutes to complete one full rotation, what is the angular velocity of the ferris wheel

A heat engine has a thermal efficiency of 45%. how much power does the engine produce when heat is transferred into it at a rate of 109 kj/hr?

Dos pelotas de tenis se lanzan verticalmente, hacia arriba y desde el mismo punto, con 2 s de diferencia. La velocidad inicial de la primera es de 20 m/s, y la de la segunda, de 30 m/s.

What is the primary function of the small intestines

A nuclear power plant generates a total of 150mw of power and 45% of this power is wasted heat that is discharged on the cooling water of a river. the river flows at 660.43 gal/s and has an upstream temperature of 64.4 ⁰f.