A cinder block sits on a platform 20 m high. If it has a mass of 8 kg, find its energy

If an object-spring system is hung vertically and set into oscillation, why does the motion eventually stop?

Which statement is true about the atoms in helium gas? A. They have strong attractions to one another. B. They are not closely packed. C. They are arranged in an orderly pattern. D. They travel in circular paths.

A fellow student of mathematical bent tells you that the wave function of a traveling wave on a thin rope is y (x, t) = 2.30mmcos[ (6.98rad/m) x + (742rad/s) t]. Being more practical-minded, you measure the rope to have a length of 1.

Round 432.8 hundred into to the nearest whole number

If a green ball has a greater momentum than an orange ball and both balls are moving at the same velocity, then A) the green ball has a greater mass B) the orange ball has a greater mass C) the mass of the balls is the same

Norma kicks a soccer ball with an initial velocity of 10.0 meters per second at an angle of 30.0% if the ball moves though the air for 3.2 seconds what's the horizontal distance traveled by the ball

Suppose s (t) is the position of an object moving along a line at time t is greater than or equal to 0. What is the average velocity between the times t=a and t=b? What is the instantaneous velocity at t=a?

Estimate how long it would take one person to mow a football field using an ordinary home lawn mower. suppose that the mower moves with a 1-km/h speed, has a 0.5-m width, and a field is 360 ft long and 160 ft wide. 1 m = 3.281 ft.

Badri makes the table below to review the factors that affect the electric force between objects. Which change will correct the error in Badri's table?

A star with the same mass of the sun has a newly discovered planet whose semi-major axis of 2.48 au and an eccentricity of 0.08. what is the aphelion distance of the new planet