The engine of a locomotive exerts a constant force of 8.0 105 N to accelerate a train to 82 km/h. Determine the time (in min) taken for the train of mass 1.7 107 kg to reach this speed from rest. min

What is the mass of a cylinder of lead that is 1.80 in in diameter, and 4.12 in long. the density of lead is 11.4 g/ml?

Explain Newton's 3 laws of motion by using the example of a rollercoaster?

Kepler's investigations of the movement of the planets explained which of the following?

A ball is pushed from a stop and rolls 6 m in 2 s. Student A says the average speed of the ball is 3 m/s. Student B says the average speed of the ball is 1.5 m/s2. Which student is correct? Explain your answer.

Identify the method of thermal energy transfer.

A science class did an investigation to see how many breaths it took for each student to blow up a balloon. Jason blew up his balloon with the fewest breaths. Which of these might explain why Jason took fewer breaths to blow up his balloon? A.

How the behavior of waves is affected by a medium

Suppose the gravitational force between two spheres is 100 N. If the distance between the spheres is halved, what is the new gravitational force between them?

Why did the work of Rutherford and Marsden convince many scientists that the 'plum pudding' model of the atom was incorrect?

Current always returns to the: a) positive battery terminal b) negative battery terminal