How long until the sun runs out of hydrigen?

To recharge your cell phone you plug it into an electrical outlet for several hours. The electrical energy is stored as ___ energy until you are ready to use the phone. A. radiant B. thermal C. nuclear D. chemical

how does inertia affect collisions between cars?

Freight trains can produce only relatively small acceleration and decelerations. (a) what is the final velocity (in m/s) of a freight train that accelerates at a rate of 0.0600 m/s2 for 8.00 min, starting with an initial velocity of 5.00 m/s?

A single-turn wire loop 10 cm in diameter carries a 10 a current. it experiences a torque of 2.5*10-2 n⋅m when the normal to the loop plane makes a 33 ∘ angle with a uniform magnetic field.

What is 143 rounded to the nearest 10

Which of the following scientists taught physics in the United States? A. Warren Washington B. Christian Doppler C. Subrahmanyan Chandrasekhar D. Charles Kuen Kao

If a crest and a trough in a ripple tank meet, what happens? A) Constructive interference occurs. B) Nothing happens. C) They cancel each other out. D) They add up to form a larger trough.

A joule, which is a unit of work, is equal to? A. a newton times a meter B. a newton divided by a second C. a newton times a second D. a newton divided by a meter

Which simple machine is a doorknob? a lever a screw a pulley a wheel and axle

A small ball of mass m is aligned above a larger ball of mass M = 0.63kg (with a slight separation) and the two are dropped simultaneously from a height of 1.8m.