Find the mass in kilograms of the following objects. A coral colony of 3200 individuals each weighing 0.45 g.

Create a slope, with the graph presented. What does the slope represent? How close is your slope to the expected value?

A bullet is found embedded in the wall of a room 2.9 m above the floor. The bullet entered the wall going upward at an angle of 34.9°. How far from the wall was the bullet fired if the gun was held 1.3 m above the floor?

A positively charged thunderhead (raincloud) hovers above a negatively charged patch of Earth. In the atmosphere in between these two charged objects there exists a uniform electric field of strength 36,000 N/C. Draw lots of pictures please.  a) In what direction (up or down) does the electric field point? b) If a free electron is released from rest within this region, in which direction will it begin to move (up or down)? (Note: Gravitational force can be ignored here, since the electric force is much bigger!) c) What is the electron's speed after 1 nanosecond, assuming that it does not collide with anything during this time? (In fact, the electron would collide with air molecules, knocking more electrons free, in a sort of chain reaction, like one rock knocking loose several more in an avalanche. The light that gets emitted when the free electrons quickly settle back into atoms is called "lightning".)

A space worker exerts a force of 256 N on a spaceship and it accelerates at 8 m/s/s. What is the ship's mass?

A train pulled by a diesel engine moves down a track at 20.0 m/s. The mass of the diesel engine is 113000 kg, and the mass of each of the 10 cars is 91,500 kg. If the train attempts to coast up a hill of height 10.0 m, what is its final velocity at the top of the hill?

You purchased 2.6 kg of apples from Wollaston. You noticed that they used a spring scale with the smallest division of 15.0 g to weigh them. What is the relative error in this weight measurement as a percentage?

The Lamborghini Huracán has an initial acceleration of 0.75g. Its mass, with driver, is 1510 kg. If an 80 kg passenger rode along, what would the car’s acceleration be?

a car with mass 850kg is moving in the right direction at a constant speed of 1.44m/s.what is the force on the car?

A 279 kg boulder is pulled with a rope across a field by a strong man. If the man uses a force of 2,439 N to cause the boulder to accelerate across the field. The coefficient of friction is 0.69. How fast does the strong man accelerate the boulder?