Devon has several toy car bodies and motors. The motors have the same mass, but they provide different amounts of force, as shown in this table Which motor and body should Devon use to build the car with the greatest acceleration?

A child on a spinning playground ride is (36 m from the center of the ride. The centripetal force on the child is 19 N. What is the mass of the child if the child has a tangential speed of 0.54 m/s? 3.7 kg 13 kg 23 kg 79 kg

A 905 kg test car travels around a 3.25 km circular track. If the magnitude of the centripetal force is 2140 N, what is the car's speed?

A sample of 1.59 grams of Z is dissolved into 500 grams of water which is in a styrofoam coffee cup. The temperature is monitored and is found to drop from 23.669◦C to 23.384◦C.

Who is responsible for scheduling the bills for the floor debate in the Senate? a. Senate majority whip b. Senate minority leader c. President of the Senate d. Senate majority leader

What is the speed of a 48 kg dog running across a lawn with 216 J of energy?

A transformer has a primary coil with 700 turns and a secondary coil with 350 turns. If the output voltage is 410 volts, what is the input voltage? * a.) 245,000 Volts b.) 205 Volts c.) 2 Volts d.) 820 Volts

Your odometer of your car says 54 123 miles when you start your trip, your watch says 9 45 AM When you get to your estination the odometer says 54 miles and your watch says 11 45 AM What is your average velocity (assuming you were traveling due

Briefly explain how an electric motor works.

When is a hypothesis developed in the scientific method? before there is a question after a question has been identified and observations are made after an experiment if the experiment justifies one

Interactive LearningWare 4.1 reviews the approach taken in problems such as this one. A 1800-kg car is traveling with a speed of 14.0 m/s.