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%
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
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
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
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
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 block of mass m=2.0kg is held in equilibrium on an incline of angle=60 degrees by the horizontal force F. a) determine the value of F b) determine the normal force exerted by the incline on the block (ignore friction).
Two children, Ferdinand and Isabella, are playing with a water hose on a sunny summer day. Isabella is holding the hose in her hand 1.0 meters above the ground and is trying to spray Ferdinand, who is standing 10.0 meters away. To increase the range of the water, Isabella places her thumb on the hose hole and partially covers it
The specific gravity of ice is .917, whereas that for seawater is 1.025. What fraction of an iceberg is above the surface of the water? *note- if possible, please explain this in the simplest way you can- i'm not naturally a science kinda gal! Thanks :)
Hi. Can someone please walk me through how to do the following problem? Suppose that when you ride on your 7.70-kg bike the weight of you and the bike is supported equally by the two tires. If the gauge pressure in the tires is 70.5 lb/in^2 and the area of contact between each tire and the road is 7.13 cm^2, what is your weig
Two dust particles each of mass 13 ug (10^-6) are floating on a gentle stream of air. what (equal) positive charge would each dust particle have to carry in order that their electrostatic repulsion should exactly balance their gravitational attraction? What is the electrostatic potential energy of the two dust particles each
A uniform, spherical planet has a spherical space at its center. The radius of the surface of the planet is Rp= 8.9E7 m (8.9 x 10^7 m). The radius of the central hollow space is Rh = 6.2E5 m. The total mass of the planet is M= 7.5E28 kg. The distance from the center to three designated points are: Point a is distance Ra= 9
Question: A steel block has a volume of 0.08 m^3 and a density of 7,840 kg/m^3, what is the force (fo) gravity acting on the block (the weight) in water? A. 5362.56N B. 6150.64N C. 6700.56N D. 7600.18N
Accodting to Newton's universal law of gravity, if the separation between to bodies is increased by a factor of three, the gravitational pull each has on the other will be X by a factor of Y ?
In his novel "From the earth to the moon", Jules Verne imagined that astronauts inside a space ship would walk on the floor of the cabin when the force exerted on the ship by the earth was greater than the force exerted by the moon. When the force exerted by the moon was greater he thought the astronauts would walk on the ceili
1. Show by algebraically reasoning that your gravitation acceleration towards an object of mass M a distance d away is a=GM/d^2 and therefore doesn't depend on your mass. 2. Can a satellite coast in a stable orbit in a plan that doesn't intersect the earth center? Defend your answer. (Include 1 or more diagrams) 3. Stude
Three coplanar forces act on a 75000.0 kg object in outer space, where there is no gravity: 14.2 kN directed at 357°, 25.6 kN at 138°, and 16.4 kN at 255°. What is the magnitude and direction of the acceleration? If the object has an initial velocity of 17.5 miles/h directed at 58.6° in the same plane as all three
SEE ATTACHMENT #1 for a diagram showing parameters. Consider the earth, mass M= 5.98 E 24 kg, and the moon, mass m= 7.35 E 22 kg, as a system with distance d= 3.84 E 8 m between their centers. Find the distance between the c.m. (center of mass) of the system, and the point where the gravity field of the earth cancels that
SEE ATTACHMENT #1 for a diagam showing parameters and basic equations (1) and (2). A thin rod of negligible mass is 6 meters long. Five equal masses, each M= 2.5 kg, are attached to the rod evenly spaced 1.2 meters apart. In gravity free space, the system rotates about the center of the rod, completing 15 revolutions every 6
A) Very often a sinking ship will turn over as it becomes immersed in water. Why? B) Is it true that a floating object will only be in stable equilibrium if its centre of buoyancy lies above its centre of gravity? C) Why should one take short steps rather than long ones when walking on ice?