A car rounds a 75-m radius curve at a constant speed of 18 m/s. a ball is suspended by a string from the ceiling the car and moves with the car. the angle between the string and the vertical is:

A 1200 kg car surrounds an 80 meter radius curve. If the coefficient of friction between the tires and the road is 0.65, what maximum speed should the car have to not leave the curve to : a. 23 m / s b. 10 mph c. 62 km / h d. 6.3 m / s

What factors might affect how the watermill works?

A drag racer starts from rest and acclerates to a velocity of 30 m/s in 1 s. What is the acceleration of the racer?

The process in which light bounces back from and object at the same angle and intensity as it is received by the object is called

What is the average distance, in millions of kilometers, from the Sun to the asteroid belt? A) 85 B) 503 C) 189 D) 129 Why?

Which of the following has the greatest momentum? A - Truck with a mass of 2250 kg moving at a velocity of 25m/s B - car with a mass of 121010 kg moving at a velocity of 51 m/s C - truck with a mass of six 6120 kg moving at a velocity of 10 m/s

How is a magnetic field generated?

When a bat uses echolocation to determine the distance to an insect, it sends out a sound wave and waits to see how long the sound takes to echo back. Suppose now that a bat hears its echo 0.06 LaTeX: ss after it emitted the sound.

An exhausted bicyclist pedals somewhat erratically when exercising on a static bicycle. The angular velocity of the wheels follows the equation? (t) = at? bsin (ct) fort?0, where t represents time (measured in seconds), a = 0.500 rad/s2, b = 0.

This boy uses a force to lift a heavy rock. (He is carrying it.) What can the boy do if he wants to lift the same rock more quickly? A. use greater upward force B. use greater downward force C. decrease the force of gravity D.