A ball has a mass of 140 g. What is the force needed to accelerate the ball at 25 m/s2? (Formula: F=ma) 3.5 N 115 N 165 N 4.5 N

What color of light has the most energy? A. Blue B. Red C. Green

Which causes the thermal energy in a building to decrease? the air conditioner and the heat engine the furnace and the heat pump the heat pump and the air conditioner the heat engine and the furnace

A current of 9 a flows through an electric device with a resistance of 43. what must be the applied voltage in this particular circuit? a. 387 v b. 4.8 v c. 387 a d. 4.8 a

What features were the last to form on the moon?

A stone is thrown at an angle of 45 degrees above the horizontal from the top edge of a cliff with an initial speed of 14 m/s. A stop watch measures the stone's trajectory time from top of cliff to bottom to be 6.9 s.

A wave has a wavelength of 10 mm and a frequency of 5 hertz. What is its speed? a. 50 mm/s b. 50 hertz's c. 2 mms d. 0 0.50 mms

Suppose you illuminate two thin slits by monochromatic coherent light in air and find that they produce their first interference minima at / pm 35.09 degrees on either side of the central bright spot.

Tala wants to create a sound echo. She can create the echo using a pane of glass or a carpet square. Which one does she choose? Explain.

a the average distance from the Sun to Pluto is approximately 6.10 x 1 0 ^9. how long does it take light from the sun to reach Pluto?

A 25kg object moves from left to right at a speed of 30km/h. What net force is required to keep this object moving in a straight line at constant speed