Which mineral is hard and has the same color and streak

The rate of change of the downward velocity of a falling object is the acceleration of gravity (10 meters/sec^2) minus the acceleration due to air resistance. Suppose that the acceleration due to air resistance is 0.

Newton's 2nd law of motion

Which word is described by this riddle poem. (hint: jails and phones) My first is in cars but isn't in bars My second's in dance, but not in pants My third is in lame, my fourth is the same. What word could i possibly be?

If Angle "a" is 25°, Angle "b" is: A) equal to Angle c B) less than Angle c C) greater than Angle c

A nuetral atom has no overall charge. Explain this in terms of its particles.

the half-life of carbon - 14 is 5730 years. What fraction of carbon-14 would remain after 11,460 years?

An object with a mass of 10.9 kg experiences a force of 18.53 N. What is the acceleration of the object? A. 2.2 m/s2 B. 1.7 m/s2 C. 16.83 m/s2 D. 1.3 m/s2

A proton, starting from rest, accelerates through a potential difference of 1.0 kV and then moves into a magnetic field of 0.040 T at a right angle to the field. What is the radius of the proton's resulting orbit

Which of the following terms are needed to completely describe speed? Check all that apply. A. Units B. Direction C. Number D. Mass

Drivers are able to see objects ahead of them because light travels through windshields.