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Question 401263: A heavy, 94-kg crate is pushed a distance of 5.2 m at a speed of 0.40 m/s on the floor of a
warehouse. The coefficient of the kinetic friction is 0.25.
a) Determine the magnitude of the horizontal force needed to move the crate.
b) Find out the work done in moving the crate.
c) What is the power involved in moving the crate? (g = 9,8 m/s2)
Click here to see answer by richard1234(5390)  |
Question 402126: I want to take the GED test but I don't understand algebra at all. I have a very difficult time understanding all areas in algebra. Any help and/or suggestions would be greatly appreciated. Thank you for you time.
Sincerely,
Deangelo Lindsay
Click here to see answer by rapaljer(4667)  |
Question 402308: A 5kg block of ice falls away from the roof of a block of flats, at a height of 26m above the ground.
a) find out how long it takes for the ice block to hit the ground.
b) what is the speed at which the ice block hits the ground.
c) how much energy it transfers to the surroundings when it comes to a stop
(g=9.8)
I have tried and found: a) t=2.3s b) v=22.54m/s but the last part i'm lost!
Click here to see answer by Earlsdon(6287) |
Question 402577: Three times the tens digit of a certain two digit number is two more than four times the units digit. The difference between the given number and the number obtained by reversing the digits is two less than twice the sum of the digits. Find the number
Click here to see answer by mananth(12270)  |
Question 402595: Tank A contains 32 gallons of solution which is 25% alcohol by volume. Tank B has 50 gal of solution which is 40% alcohol by volume. What volume should be taken from each tank and combined in order to make up 40 gal of solution containing 30% alcohol by volume?
Click here to see answer by robertb(4012)  |
Question 402625: When two cars race around a circular mile track starting from the same place at the same instance, they pass each other every 18 seconds when traveling in opposite directions and every 90 seconds when traveling in the same direction. Find their speeds in miles per hour
Click here to see answer by robertb(4012)  |
Question 402627: A passenger on the front of train A observes that she passes the complete length of train B in 33 seconds when traveling in the same direction as B and in 3 seconds when traveling in the opposite direction. If B is 330 ft long, find the speeds of the two trains
Click here to see answer by robertb(4012)  |
Question 402617: A given alloy contains 10% zinc and 20% copper. How many pounds of zinc and copper must be melted with 1000 pounds of the given alloy to produce another alloy analyzing 20% zinc and 24% copper? All percentages are by weight
Click here to see answer by robertb(4012)  |
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