Wednesday
December 17, 2014

Posts by sabeen


Total # Posts: 19

physics
You are viewing a New Year's Day fireworks display at a distance of 1500 m. It is 4.0°C. How long does it take the sound of the fireworks exploding to reach you?
April 5, 2011

physics
A longitudinal wave spreads radially from a source with power 345 W. What is the intensity 40.0 meters away? answer in W/m^2.
April 4, 2011

physics
You are pulling your sister on a sled to the top of a 20.0 m high, frictionless hill with a 10.0° incline. Your sister and the sled have a total mass of 50.0 kg. You pull the sled, starting from rest, with a constant force of 127 N at an angle of 45.0° to the hill. If ...
March 17, 2011

physics
A small domestic elevator has a mass of 454 kg and can ascend at a rate of 0.180 m/s. What is the average power that must be supplied for the elevator to move at this rate ? answer in watts.
March 8, 2011

physics
A 10-kg duffle bag is undergoing a vertical acceleration of 0.65 m/s2 (positive for up, negative for down), while its owner is holding it with an upward force. What is the magnitude of this force?
February 21, 2011

physics
two carts are on a frictionless surface. a compressed spring acts upon te carts, and the 1.5 kg cart moves with a velocity 27 cm/s to the left. what is the velocity of the 4.5 kg cart?
January 31, 2011

physics
two campers dock a canoe. one camper steps onto the dock. this camper has a mass of 80 kg and moves forward at 4 m/s. with what speed and direction do the canoe and the other move if their combined mass is 110 kg?
January 31, 2011

physics
idk somehow i am doing well.
December 21, 2010

physics
i still dont understand:( what is mgh and what is PE??? what is m? i dont understnad many of the variables in this equation. i was never taught this in class neither have i ever heard of this equation. im sorry mr.pursley. i really am.
December 21, 2010

physics
anyone who knows the answer to this question please show your work. drwls i know i posted this queestion before but you didnt reply to my comment. Your friend has climbed a tree to a height of 6.00 m. You throw a ball vertically up to her and it is traveling at 5.00 m/s when ...
December 21, 2010

physics
anyone??? A juggler throws a ball from height of 0.950 m with a vertical velocity of +4.25 m/s and misses it on the way down. What is its velocity when it hits the ground? thanks.
December 20, 2010

physics
because you didnt answer my question about gravity. pls look at my prev. post
December 20, 2010

physics
anyone else know how to go about solving this complicated problem? Your friend has climbed a tree to a height of 6.00 m. You throw a ball vertically up to her and it is traveling at 5.00 m/s when it reaches her. What was the speed of the ball when it left your hand if you ...
December 20, 2010

chemistry
i think you can use stoichiometry for this question. i shud help
December 20, 2010

AP Physics
oh.
December 20, 2010

physics
is g in this equation 9.8 or -9.8?
December 20, 2010

physics
Your friend has climbed a tree to a height of 6.00 m. You throw a ball vertically up to her and it is traveling at 5.00 m/s when it reaches her. What was the speed of the ball when it left your hand if you released it at a height of 1.10 m?
December 20, 2010

physics
can anyone help me on this physics problem?
December 20, 2010

physics
A juggler throws a ball from height of 0.950 m with a vertical velocity of +4.25 m/s and misses it on the way down. What is its velocity when it hits the ground?
December 20, 2010

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