How much mechanical energy did lose on the hill
A fun-loving 11.4 kg otter slides up a hill and then back down to the same place. she starts up at 5.75m/s and returns at 3.75m/s , how much mechanical energy did she lose on the hill? change of (E (mech))= ? J what happened to the energy?
Expected delivery within 24 Hours
Assume the mass of the Sun is 1.61 × 1030 kg, and the mass of a hydrogen atom is 1.672 × 10-27 kg. How many atoms are there in the Sun?
If Polaris were to burn out today, how many years from now would we see it disappear? What time interval is required for sunlight to reach the Earth?
A plane flies from base camp to Lake A, 300 km away in the direction 36.9° south of east. After dropping off supplies it flies to Lake B, which is 260 km at 30.0° west of north from Lake A. Determine the distance and direction from Lake B
Three electrons form an equilateral triangle .5 nm on each side. A proton is at the center of the triangle. What is the potential energy of this group of charges?
1. Explain how the temperature difference between the poles and the equator drives the motion of the oceans and atmosphere. 2. What are the differences between ice caps and glaciers?
A 0.16-kg ball is placed in a shallow wedge with an opening angle of 110°, as shown in the figure. For each contact point between the wedge and the ball, determine the force exerted on the ball. Assume the system is frictionless.
what is the average volume (in cubic meters) required for each iron atom and what is the distance (in meters) between the centers of adjacent atoms?
An electric force of 4.0 N exists between two objects separated from each other by a distance of r. If the distance is decreased to 0.50r, calculate the magnitude of the force between the two objects.
What is the torque exerted by the fish about an axis perpendicular to the page and passing through the hand of the person holding the pole?
Two cylindrical bars, each with diameter of 2.50 cm, are welded together end to end. One of the original bars is copper and is 0.360 m long. The other bar is iron and is 0.180 m long. What is the resistance between the ends of the welded bar at 20
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!