How many grams of ice at -14°C are needed to cool 200 g of water from 25°C to 10°C. (Take specific heat of ice =0.5 cal g^-1 °C^-1 and latent heat of ice = 80 cal g^-1)

(**i would really appreciate if this was answered soon** ) which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?

For waves in the ocean, the medium of the waves is a. air b. water c. energy d. a passing boat

On a frictionless air track, a blue glider with mass 0.200 kg is moving to the right with a speed of 8.00 m/s. it strikes a red glider that has mass 0.600 kg and that is initially at rest. after the collision, the blue glider is moving to the left with a speed of 3.00 m/s.(a) what are the magnitude and direction of the velocity of the red glider after the collision? (b) is this collision elastic?