Wednesday

July 23, 2014

July 23, 2014

Total # Posts: 15

**Physics**

Help!

**Physics**

Thanks, please answer ? a)Express b in term of, if necessary, R , L , C ?

**physics**

Help!

**physics**

Please help!

**science**

im trying to figure out what would happen if 4500 calories of heat are added to a 50 gram ice cube at -10 degrees celsius

**Math**

If sinx= 5/13, and x is a positive acute angle, find sin (x + 3pi/2)

**college physics helpasap**

ok thank you i got it. still baffled on how the distace is 450 but i multiplyed 90*450*cos35 w=f*d*costheta and 33175 was the answer thank you

**college physics helpasap**

how did you get 450m? because the distance wasnt given in this problem

**college physics helpasap**

The water skier in the figure is at an angle of 35degree with respect to the center line of the boat, and is being pulled at a constant speed of 15m/s . 1)If the tension in the tow rope is 90.0N, how much work does the rope do on the skier in 30.0s ? 2)How much work does the r...

**physics**

...answer** then for kinetic friction, i am clueless how to find the acceleration since there is no speed given in the equation. i know there is somehting i am missing or that i am looking at this question in the wrong way. the varible i think are 1.75kg for the weight of the ...

**physics**

i tried it many different ways. but basically i used fk=ukN . forexample for static friction (uk) the acceleration= o so unN=ma us(1.45)=1.75kg(0) us=1.45 and i got the wrong

**physics**

I keep geting this question wrong and cant figure out what i am doing wrong. Help please. When you push a 1.75- book resting on a tabletop, it takes 2.23 to start the book sliding. Once it is sliding, however, it takes only 1.45 to keep the book moving with constant speed. Wha...

**pysics**

A hot-air balloon is descending at a rate of 1.5 when a passenger drops a camera.If the camera is 41 above the ground when it is dropped, how long does it take for the camera to reach the ground?

**physics**

A hot-air balloon is descending at a rate of 1.5 when a passenger drops a camera.If the camera is 41 above the ground when it is dropped, how long does it take for the camera to reach the ground?

**Environmental science**

What are some examples of innovations that help reduce, cope with, or profit from global warming?

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