True or false?

nuclear fusion happens when uranium combines

A 70 kg box is pulled by a 400 N force at an angle of 30° to the horizontal. The force of kinetic friction is 75 N.

An electron in a television tube is accelerated uniformly from rest to a speed of 8.4/times 10^7~/text{m/s}8.4*10 7 m/s over a distance of 2.5 cm. What is the instantaneous power delivered to the electron at the instant that its displacement is 1.

A 55.0-gram lead bullet hits a steel plate, both initially at 24 °C. The bullet melts and splatters on impact.

Oceans experience very small temperature changes causing nearby areas to have very drastic changes in temperature from season to season have winter-like temperatures year round have smaller changes in temperature from season to season have

The "turning effect of a force" (T = F * r) is: (a) determined as the product of force and the moment of inertia. (b) generated by concentric forces. (c) equivalent to the angular momentum. (d) determined as a product of torque and moment arm.

Skeletal muscle cells have large stores of ATP that are readily available and alone can provide energy for maximal exercise lasting 30-60 seconds.

A catcher "gives" with a baseball when catching it. If the baseball exerts a force of 475 N on the glove such that the glove is displaced 8.97 cm, how much work is done by the ball? Answer in units of J.

Which of the following is the best sign that cooking pancake batter causes a chemical change

The electric field near the earth's surface has magnitude of about 150n/c. what is the acceleration experienced by an electron near the surface of the earth? express your answer to two significant figures and include the appropriate units.

Minerals are considered to be Answer made out of rocks the building blocks of rocks extremely rare and valuable difficult to find