Math
Thank you so much this is better than the way my teacher explained. :)
Math
Jeremy got scores of 93,82,91, and 88 on his first four math test. What score must he get on the fifth test to have an average test grade of 90 for the five test ? Can someone explain step by step. Please
math
what is the answer to x-3=-1
physical sciences
The density of mercury is 13.54 g/cm3. Suppose you need 40 gm of mercury for an experiment. What volume of mercury do you need?
general chemistry
The gas with a pressure of 1100 at 175 is cooled to 0 °C find out what the Pf= in torr
Physics
A 6.7 kg package starts from rest and slides down a mail chute that is 50 m long and has a vertical drop of 10m. If the velocity of the package at the bottom of the chute is 4m/s what is the average frictional force on the package as i slides down the chute?
Physics
a 0.2kg rubber ball is dropped from the window of a building. It strikes the sidewalk below at 30 m/s and rebounds up at 25 m/s. If the ball is in contact with the sidewalk for 0.025s, what is the magnitude of the average force applied by the sidewalk on the ball?
physics
The mass is not given in the problem, does that mean it cancels out?
physics
a skier moving at 15 m/s down a 20 degree slope encounters a region of wet snow of coefficient of friction is 0.8. how far down the slope does she go before stopping
Physics
a 0.2kg rubber ball is dropped from the window of a building. It strikes the sidewalk below at 30 m/s and rebounds up at 25 m/s. If the ball is in contact with the sidewalk for 0.025s, what is the magnitude of the average force applied by the sidewalk on the ball? I need steps...
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