An unknown substance has a mass of 15 g and a volume of 4 cm3. Calculate the density of the unknown substance.

Imagine a bouncing ball that does not lose any energy as it bounces. could it ever bounce to a greater height than it was dropped from? explain your answer

A car accelerates at a rate of 3 m/s^2. If it's original speed is 8 m/s, how many seconds will it take the car to reach a final speed of 26 m/s?

A train travels 78 kilometers in 2 hours, and then 60 kilometers in 3 hours. What is its average speed?

A scientist in a lab would like to determine if an object conducts electricity. Which of the following experiments would test this? A. Place the object on a source of heat, and measure the time it take to heat up. B. Float the object in water. C.

An example of technological change is A. being able to produce the same output using fewer inputs. B. being able to produce more output using the same inputs. C.

Why do you believe knowing how elements and compounds react together Is essential In every day matters?

A bullet with a mass 2.25g is fired up into the air with a velocity of 187.5 m/s. What is the maximum height of the bullet

An electron is moving at a speed of 4.8 * 10 6 m/s at an angle of 30.0° with respect to a uniform magnetic field of 9.2 * 10 - 4 T. What is the radius of the resulting helical path? (me = 9.11 * 10 - 31 kg, qe = 1.60 * 10 - 19 C)

Which transfer of energy occurs mainly through the process of convection?

The statement, "All basketball players are tall" is a stereotype.