A ball is thrown at an angle of 45° to the ground. if the ball lands 87 m away, what was the initial speed of the ball? (round your answer to the nearest whole number. use g â 9.8 m/s2.)

A single loop of wire with an area of 0.0860m^2 is in a uniform magnetic field that has an initial value of 3.80 T, is perpendicular to the plane of the loop, and is decreasing at a constant rate of 0.140 T/s.

Consider a closed circuit with a 9-volt battery connected in series to a light bulb with a resistance of 3 ohms. What is the current flowing through the light bulb?

In the table below, which statement would best fill the missing box under "Closed System"? Open System Closed System Matter freely moves Matter does not freely move Energy freely moves Energy is unknown Energy is destroyed Energy does not freely

A car is towing a boat on a trailer. The driver starts from rest and accelerates to a velocity of + 16.7 m/s in a time of 20.7 s. The combined mass of the boat and trailer is 594 kg. The frictional force acting on the trailer can be ignored.

A force of 0.2 Newtons is required to slide a book across the table. The book accelerates at 0.11 m/s squared. What is the mass of the box?

In a classic carnival ride, patrons stand against the wall in a cylindrically shaped room. once the room gets spinning fast enough, the floor drops from the bottom of the room!

What does Newton's law of universal gravitation say about the distance between objects?

Direction of current in a solenoid depends on the direction of magnetic field

What is your mass in kilograms?

Why is it useful for pairs of DNA to be held together by men bonds and not covalent bonds?