The gauge pressure at the bottom of a reservoir is four times what it is at a depth of 1.2 meters. How deep is the reservoir?
A liter of corn oil has a mass of 0.925 kg. What is the density and the specific gravity of the oil?
A carpenter drops a hammer off the roof of a house. If the hammer falls a distance of 6.46 meters, what is the speed just before striking the ground? Neglect air friction. I believe the answer is 11.3 m/s. I need to see each step and formula to solve this question.
Astronauts visiting Planet X have a 2.40 m-long string whose mass is 5.50 g. They tie the string to a support, stretch it horizontally over a pulley 1.60 m away, and hang a 1.80 kg mass on the free end. Then the astronauts begin to excite standing waves on the string. Their data show that standing waves exist at frequencies of 6
A 2000 kg ore car rolls 50.0 m down a frictionless 10.0 degree incline. If there is a horizontal spring at the end of the incline, what spring constant is required to stop the ore car in a distance of 1.00m?
I need some help with circular motion physics questions: 1. Young David who slew Goliath experimented with slings before tackling the giant. He found that with a sling of length .598 m, he could develop a rotation rate of 8.04 rev/s in his weapon. If he increased the length to .892 m, he could revolve the sling only 5.99 time
What is the free fall acceleration in a location where the period of a 2.15 m long pendulum is 2.94s? Answer in units of m/s2. The answer must be written within + or - 0.14%
1) A tennis ball is thrown vertically downward from a height of 54 feet with an initial velocity of 8 feet/second. What is its impact if it hits a six foot tall man on the head?(a(t)=-32) 2) A projectile is shot vertically upward from ground level with an initial velocity of 49 meters per second. Use a(t)=-9.8 m/sec^2 A)
A stone is dropped from the top of a cliff. The splash it makes when striking the water below is heard 3.33 s later. How high is the cliff?
If m1 = 3.12 kg, m2 = 2.74 kg, and m3 = 2.5 kg, to the nearest hundredth of a nJ what is the potential energy of the configuration? (See attached file for full problem description)
Rotating Space Stations. One problem for human living in outer space is that they are apparently weightless. One way around this problem is to design a space station that spins about its center at a constant rate. This creates "artificial gravity" at the outside of the station. A) If the diameter of the space station is 8
Three objects are positioned along the x axis as follows: 4.4 kg at x = +1.1m, 3.7 kg at x = -0.80m, and 2.9 kg at x = -1.6 m. The acceleration due to gravity is the same everywhere. What is the distance from location of the center of gravity to the location of the center of mass for this system A ceiling fan has five blades
BLOCK WITH A FORCE THERE IS A BLOCK OF SIDE X METRES RESTING ON A FRICTIONLESS SURFACE A FORCE F IS APPLIED AT THE LEFT TOP OF THE BOX(TAKE THE DIRECTION OF FORCE IS FROM LEFT TO RIGHT) HORIZONTALLY NOTE: THE FORCE IS NOT AT THE CENTRE OF GRAVITY. PROVE THAT THE BOX TENDS TO ROTATE ABOUT THE CENTRE OF GRA
When scientists are trying to understand a particular set of phenomena, they often make use of, in a scientific sense, a kind of analogy or mental image of the phenomena in terms of something we are familiar with called: (a) model (b) theory (c) law (d) principle Usually a model is relatively simple and provides a stru
Q1) Block A of mass m1 on a smooth frictionless surface being pulled to the right by the force of gravity on block B with mass m2 by means of the attached string (as shown in the attached image). Assume no friction anywhere in the system. Assuming all units are mks, the force exerted by the gravity that is effective in moving b
1. Galileo dropped objects from the Tower of Pisa to study gravity. The objects height above the ground could be measured using h=-4.9t^2 +56. a) How high is the Tower? 56 units b) How far has an object fallen after 2 seconds? h = -4.9^2 + 56 h = -4.9(2)^2 +56 h = -19.6 +56 h= 36.4 units c) How long will it take
A rectangular door is submerged at a depth of 3 meters in water. How much force is exerted by pressure against the door?
A rectangular door with dimensions 5 m by 9.1 m is submerged at a depth of 3 meters in water. How much force is exerted by pressure against the door?
A simple pendulum of length 2.5 m makes 5.0 complete swings in 16 s. What is the acceleration of gravity at the location of the pendulum?
Assume that the acceleration of gravity is 10 m/s2 downward, and that all friction effects can be neglected. A ball is thrown upward at a velocity of 20 m/s. What is its velocity at t = 2 s? zero a. 10 m/s upward b. 10 m/s downward c. 20 m/s d
What is the radius of the skull if the skull has dimensions 200*200*200, and where will its centre of gravity be?
GM/r2 If my planet is 6052 km and my planets mass is 4.87e24 kg how do I calculate the gavitational acceleration of the planet?
Can anyone please show me how to get started on the attached lab questions? Thanks! Part 2 (also attached) Equipment: A length of string, a compact object which can be tied to the string like a metal washer, a tack, a stopwatch or clock, and a meter or yard stick. Procedure: I. Tie your object to the string and ti
A plane is 45 degrees to the horizontal with a stationary mass on it. The mass is 12 kg and the acceleration of gravity is 9.8 m/s^2. What is the magnitude of the force of friction required to keep the mass from moving? Answer with the number of Newtons using digits.
When you are bathing on a stony beach, why do the stones hurt your feet less when you get in deep water?
Ocean tides are produced primarily by the gravitational attraction of the Moon. Explain how this attraction gives rise to two tidal "bulges" on opposite sides of the Earth, resulting in two daily high tides and two daily low tides. [hint: Consider the inverse-square relationship of the distance in the gravitational force actin
The height s (in feet) at the time t (in seconds) of a silver dollar dropped from the top of the Washington monument is s=-16t+555 a.) Find the average velocity on the interval [2,3] b.) FInd the instantaneous velocity when t=2 and when t=3 c.) how long will it take the dollar to hit the ground? d.) Find the velo
I am trying to calculate the true weight effects of a supine leg press, standing squat, and bench press in supine. Below is communication between my previous physics professor and myself, but it really didn't answer my question. I guess I want to know if there is mathematical way to get 'true' numbers for the actual weight i
Please see attached file for questions.
A 227-kg block of cement, of density 2.8 x 10^3 kg/m^3, rests on a pedestal in front of the Al Capone Memorial Library. How much did it weigh submerged, while being hauled out of the river (freshwater)?
A metal object is hung from a scale and found to weigh 10.0 N. It is then lowered into a tank of water and its "weight," measured while its submerged, is found to be 8.00 N. What is its specific gravity?