| Question | Subject | Tutorials |
|---|---|---|
| What is the observatory altitude Question: A sensitive gravimeter at a mountain observatory finds that the free-fall acceleration is 0.0065m/s2 less than that at sea level (gsealevel = 9.83 m/s2).
Part A: What is the observatory&# … |
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| Calculate the work done on elevator by its cable, in joules
1) Suppose a 1400-kg elevator car is lifted a distance 36 m by its cable at a constant speed, assuming the frictional force on the elevator has a constant value of 95 N.
(a) Calculate the … |
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| What is linear charge density of the insulating shell
Question1
calculates the average velocity in following two cases.
(a) You walk 73.2m at the speed of 1.22m/s and then run 73.2m at the speed of 3.05m/s along a straight track.
(b) Y … |
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| What average thermal power is produced as the rock stops
Question: A 20.0- kg rock is sliding on a rough, horizontal surface at 8.00 m/s and eventually stops due to friction. The coefficient of kinetic friction between the rock and the surface is … |
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| Calculate the screen drag force A variable mesh screen produces a linear and axisymmetric velocity profile as indicated in Fig. P5.70 in the airflow through a 2-ft-diameter circular cross-sectional duct. The static pressures upstrea … |
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| What is the magnitude of her momentum 1. A rock is dropped from a high tower and falls freely under the influence of gravity. Which one of the following statements concerning the rock as it falls is true? Neglect the effects of air resist … |
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| Determine the mass of the barge in kilograms
A barge floating in fresh water (λ = 1000 kg/m3) is shaped like a hollow rectangular prism with base area A =650 m2 and height H= 2.0 m. When empty the bottom of the barge is locate … |
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| Plates that form a parallel-plate capacitor are charged
Two 2.60cm × 2.60cm plates that form a parallel-plate capacitor are charged to ± 0.708 nC.
1) What is the electric field strength inside the capacitor if the spacing among th … |
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| How long does the first to arrive have to wait for second
Alan leaves Los Angeles at 8:00 a.m. to drive to San Francisco, 400 mi away. He travels at a steady 47.0mph . Beth leaves Los Angeles at 9:00 a.m. and drives a steady 56.0mph .
How long d … |
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| What wavelengths appear in the system emission spectrum
Question: The allowed energies of a quantum system are 1.0eV , 2.0eV , 4.0eV , and 7.0eV . What wavelengths appear in the system's emission spectrum? The response must be typed, single s … |
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| Draw a free body diagram for a car
Question: A battery-powered toy car pushes a stuffed rabbit across the floor. Draw a free body diagram for a car (assume it is moving from left to right). The forces are: force of friction, … |
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| Find how much energy is required to boost it to new orbit
The space shuttle is in a 400km -high circular orbit. It needs to reach a 580km -high circular orbit to catch the Hubble Space Telescope for repairs. The shuttle's mass is 6.50×104 … |
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| Calculate the moment of inertia of the merry-go-round
A merry-go-round is a playground ride that consists of a large disk mounted to that it can freely rotate in a horizontal plane. The merry-go-round shown is initially at rest, has a radius R … |
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| Identify initial and final gravitational potential energies
Question: An ice cube of mass 50.0 g can slide without friction up and down a 25.0 degree slope. The ice cube is pressed against a spring at the bottom of the slope, compressing the spring 0 … |
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| With what speed do olaf and the ball move afterward
Solve the all parts of following question given below:
Question: Olaf is standing on a sheet of ice that covers the football stadium parking lot in Buffalo, New York; there is negligible … |
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| Estimate how many charged particles were transferred
A plastic rod that hasbeen charged to -14 nC touches a metal sphere. Afterward, the rod's charge is-6.0 nC. What kind of charged particle was transferred betweenthe rod and the sphere, a … |
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| How much farther from the charge
A +20nC charge is at the origin. How much farther from the charge is the 2000V equipotential surface than the 3000V surface?
… |
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| What is the speed of the shot when he releases it Sam heaves a shot with weight 16-lb straight upward, giving it a constant upward acceleration from rest of 45.5m/s2 for a height 63.0cm. He releases it at height 2.10m above the ground. You may ignore … |
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| What would be the length of the sides of a cube 1. Show that the density of a 5-kg solid cylinder that is 10 cm tall with a radius of 3 cm is 17.7 g/cm3.
2. What is the weight of a cubic meter of cork? Could you lift it? (For the density of cork … |
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| Determine the resulting nucleus In each of the parts of this question, a nucleus undergoes a nuclear decay. Determine the resulting nucleus in each case.
Part A. 227/89 Ac undergoes alpha decay. Determine the resulting nucleus. F … |
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