Math 12 Joint Variation Word Problem Help Please I've been stuck on this for a while now and I thought this question would be easy, but it's harder than I thought: The distance that an object falls due to gravity varies jointly as the acceleration "g" due to gravity and the square of the time "t" of the fall. The acceleration due to gravity on the moon is 0.172 of that on earth. If a rock falls for t0 (<<should be a tiny 0) seconds on earth, how many times further would the rock fall on the moon in 3t0(<<should be a tiny 0) seconds? Any help would be appreciated, thanks. *(Joint Variation Formula: y = kxz)*
Physics help I have a few questions that my teacher never told us how to do and it's stumping me real hard. He teaches us easy things and gives us hard homework.. and when i say "hard" i mean "EXTREMELY HARD". Okay, thanks in advance: A roofer is fixing your house but has forgotten to take up a hammer. (a) If the roofer is 20.0 m above you, what is the minimum velocity at which the hammer (m=2.00 kg) must be thrown at if it is to reach the roof? (b) What would the velocity be if it were a 4.00 kg hammer? (g=9.81 m/s^2) Once again, thanks in advance!
To Standard Form Can someone help me put this into standard form? y = -3x^2 - 21x -9?
Physics 11 Homework Please Help The question is: [b]An insulated container(negligible specific heat capacity)contains 185g of water at a temperature of 12.0°C. If 295g of water at a temperature of 85.0°C is added, what is the final temperature of the mixture when it is completely mixed?[/b] If the container has a negligible specific heat capacity, shouldn't the formula then be Q=mt? But the answer for that would be 35.04°C, which is wrong because the correct answer is [b]56.9°C[/b]. I would really use some help here, thanks.:)
Physics 11 Help? Again. So, the answer i got 271817.8 but the answer is really -1.4 x 10^5 J.. here's the question A 1165 kg car travelling at 55km/h is brought to a stop while skidding 38 m. Calculate the work done on the car by the frictional forces I need help, me and my brother cant seem to find the right answer.
Another Physics Brain Teaser A Rock was thrown vertically downward. if the rock was released with a velocity of 5.0 m/s and it hit the ground at a velocity of 15 m/s, from what height did was the rock released? the answer is 10 btw, i dont know how to get it though..
Physics Question. I dont get it An object is thrown horizontally from the top of a building at a velocity of 15.0 m/s. if the object takes 5.50 s to reach the ground, how high is the building? Thanks in advance!
How to not make your computer crash I wanna play Digimon Masters Online, but my computer seems to crash all the time, how can I fix it?