What is the magnetic force on a proton that is moving at 2.5 107 m/s up through a magnetic field that is 0.12 t and pointing toward you? the charge on a proton is 1.6 10-19 c. a. 4.0 10-12 n down b. 4.0 10-12 n up c. 4.8 10-13 n right d. 4.8 10-13 n left

Waves are used in many practical applications to support work, entertainment, and health. one example is the use of ultrasound imaging to safely track the development of a growing fetus. what is a specific example of a practical application of waves in medicine, entertainment, safety, or other fields? provide a brief explanation of how the properties of waves are useful to that application.

An electric clothes dryer has a resistance of 8 ohms. it draws 30 a of current. what is the voltage, in volts, of the wall outlet that it is plugged into?

Lacie kicks a football from ground level at a velocity of 13.9 m/s and at an angle of 25.0° to the ground. how long will the ball be in the air before it lands? how far will the football travel before it lands?