Determine the mechanical energy of this object: 1-kg ball rolls on the ground at 2 m/s

A. The ball is on the ground, so the mechanical energy is zero

B. 2 J

C. 1 J

D. 4 J

The force on an object is given by the equation F = ma. In this equation, F is the force, m is the mass, and a is the acceleration. What is the force on an object that has a mass of 10 kg and an acceleration of 2.5 m/s2? A. 12.5 N B. 25 N C. 0.

Two parallel plates are 1 cm apart and are connected to a 500 V source. What force will be exerted on a single electron half way between the plates?

If a sound wave is produced with a wavelength of 1.04m what is the waves frequency

sound wave of frequency 640 Hz travels 8oom in 2.5 s. calculate: (a) speed of sound (b) wavelength of sound wave

Compared to driving at 20 mph, about how much longer will it take for you to stop at 60 mph? a.) 2 to 3 times b.) 4 to 6 times c.) 8 to 10 times

A strong lightning bolt transfers about 27.88 C to Earth. How many electrons are transferred? The elemental charge is 1.602 * 10-19 C. The lightning bolt discharge lasts one millisecond.

What is the speed of a bobsled whose distance-time graph indicates that it traveled 121m in 26s? m/s

Which formula describes newton's second law of motion?

Which statements regarding the sun's nuclear fusion are true? select all that apply. a. nuclear fusion only occurs in the core. b. hydrogen fuses to form helium. c. fusion in the sun will continue for at least 1 trillion more years. d.

Scientists can find the absolute age of a rock by using a uranium 235 dating b carbon 14 dating c carbon 12 dating d relative dating