Physics, 23.11.2019 00:31, candancejc557
Taryn is playing with a bouncy ball. she notices that the ball seems to travel faster on its way back toward the ground than on its way up into the sky. why would the ball go slower moving away from the ground? a. because the ball must move against the force of earth's magnetic field on the way up b. because the ball must move against the force of earth's gravitational field on the way up c. because the ball moves with the friction force of air molecules on the way down d. because the ball moves with the elastic force of air molecules on the way down
Answers: 1
Physics, 21.06.2019 16:30, minnie7760
Aball bearing at 220.0 °c is dropped into a cup containing 250.0 g of water at 20.0 °c. the water and ball bearing come to a temperature of 30.0 °c. what is the heat capacity of the ball bearing in j/°c? (hint: how are the algebraic signs of q related for the ball bearing and the water? )
Answers: 1
Physics, 23.06.2019 02:00, ericka79
Estimate the kinetic energy of mars with respect to the sun as the sum of two terms, that due to its daily rotation about its axis, and that due to its yearly revolution about the sun. (assume mars is a uniform sphere with mass = 6.4×10 to the power of 23 kg, radius = 3.4×10 to the power of 6 m, rotation period = 24.7 hours, orbital period = 686 days and is 2.3×10 to the power of 8 km from the sun.)
Answers: 2
Taryn is playing with a bouncy ball. she notices that the ball seems to travel faster on its way bac...
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