Which method of charge transfer occurs when there is no contract between materials?

If two objects are electrically attracted to each other, 4) A) one object must be negatively charged and the other object must be positively charged. B) both objects must be positively charged. C) both objects must be negatively charged.

Which heavenly bodies are involved in causing the earths tides? A. only the moon and earth. B. only the earth. C. the earth, moon, and sun. D. all the planets plus the moon.

An astronaut has a mass of 70 kg on earth. What would her mass be in mars? What would her weight be on mars?

A. Which skill related fitness component is your strongest and weakest?

Calculate the velocity of a 2-kg ball that has a momentum of 10kg • m/s west

Most arson fires are produced through what? Accelerants Dynamite Chemical residues Steroids

A block with mass m1 = 9.4 kg is on an incline with an angle θ = 25° with respect to the horizontal. For the first question there is no friction, but for the rest of this problem the coefficients of friction are: μk = 0.22 and μs = 0.242.

When an electric current flows through a wire a magnetic field is created. To increase the power of the magnetic field you would A.

When Holly injures her shoulder playing baseball, she uses an instant ice pack to reduce the swelling. She breaks the inner, activator portion of the instant cold pack releasing the solid urea into the surrounding water.

Zach is making a round trip going from home to work. To get to her work she goes 30 m/s and then to get back home she goes 50 m/s. What is the velocityof Zach for the entire round trip? a. 0 m/s b.-20 m/s c. 80 m/s