Ap physics c work & energy
will reward

a 0.10-kilogram solid rubber ball is attached to the end of an 0.80 meter length of light thread. the ball is swung in a vertical circle, as shown in the diagram above. point p, the lowest point of the circle, is
0.20 meter above the floor. the speed of the ball at the top of the circle is 6.0 meters per second, and the total energy of the ball is kept constant.

a. determine the total energy of the ball, using the floor as the zero point for gravitational potential energy.

b. determine the speed of the ball at point p, the lowest point of the circle.

c. determine the tension in the thread at
i. the top of the circle;
ii. the bottom of the circle.

the ball only reaches the top of the circle once before the thread breaks when the ball is at the lowest
point of the circle.

d. determine the horizontal distance that the ball travels before hitting the floor.

e. determine the speed that the ball strikes the ground with.

Ametal ring 4.20 cm in diameter is placed between the north and south poles of large magnets with the plane of its area perpendicular to the magnetic field. these magnets produce an initial uniform field of 1.12 t between them but are gradually pulled apart, causing this field to remain uniform but decrease steadily at 0.240 t/s . (a) what is the magnitude of the electric field induced in the ring? (b) in which direction (clockwise or counterclockwise) does the current flow as viewed by someone on the south pole of the magnet?

Use the library or internet to research each planet. make a chart comparing the following: approximate surface temperature relative surface gravity compared to earth atmospheric gases water in any form: solid, gas, or liquid when you have completed your chart, use the information you have collected to answer the following questions: which is the hottest planet? which is the coldest planet? which planet's temperature is closest to that of earth? (note: water boils at 100°c/212°f. water freezes at 0°c/32°f) which planet has the greatest gravitational attraction? which planet has the least gravitational attraction? which planet's gravitational pull is closest to that of earth? do any of the planets have oxygen in their atmosphere? which planet's atmosphere most resembles that of earth? do any of the planets have flowing water? which planet's water resources (solid, gas, or liquid) might be close to the amount on earth? which planet most resembles earth in terms of all of the factors: temperature, gravity, atmosphere, and water? if earth became an uninhabitable planet, which planet do you think would be the next best to live on? explain your answer.

*30 points + brainliest answer* gravity is pulling an object into the sun. the closer the object gets to the sun, the greater the gravitational force that acts on the object, increasing its acceleration. a line graph plotting the speed of the object against time would have which shape? a: straight line of positive slope b: curved line that slopes upward c: curved line that slopes downward d: straight line of negative slope