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What is the speed of the dare devil at the bottom of the loop if he was traveling the minimum speed needed to stay in contact with the top of the loop the entire time?
In a cyclotron (one type of particle accelerator), a deuteron (of atomic mass 2.00 u) reaches a final speed of 10% of light while moving in a circular path of raduis 0.480m. The deuterone is maintai
During mixing, a variety of intermediate temps and water vapor percentages temporarily occur. If you are able to "see your breath" due to formation of cloud droplets during this mixing, what can you
A 0.70- ball, attached to the end of a horizontal cord, is rotated in a circle of radius 1.2 on a frictionless horizontal surface. If the cord will break when the tension in it exceeds 95 , what is
The center of a 1.10km diameter spherical pocket of oil is 1.30 km beneath the Earth's surface. Estimate by what percentage g directly above the pocket of oil would differ from the expected value of
What would be the magnitude of the gravitational force exerted on the satellite by the planet if the radius of the orbit were increased to 3.7×107 ?
Zorba, an english mastiff with a mass of 155kg, jumps forward horizontally at a speed of 6.0m/s into a boat that is floating at rest. After the jump, the boat and Zorba move with a velocity of 2.2m/
Suppose wire A and wire B are made of different metals, and are subjected to the same electric field in two different circuits. Wire B has 4 times the cross-sectional area, 1.7 times as many mobile
In the "steady state," the number of electrons per second flowing through the thick wire must be equal to the number of electrons per second flowing through the thin wire.(a) If the drift speed 1 in
The density of mobile electrons in copper metal is 8.4e28 m-3. Suppose that i = 3.4e18 electrons/s are drifting through a copper wire.
How heavy does a 2.50 kg box feel as you take an elevator up to the top floor of an office complex to make a delivery? a. While the elevator is accelerating at 2.80 m/s2?
A 57.0g hollow copper cylinder is 90.0cm long and has an inner diameter of 1.0 cm. The current density along the length of the cylinder is 1.60×10^5 A/m^2. What is the current in the cylinder?
Water boils at 100C at 1 atm of pressure and has a latent heat of 2260 Joules per gram at 100C. If water has a molecular mass of 18.02 grams/mol, a liquid density of 103 kilogram/m3 and a gaseous m
A worker forgets to tie down an empty cage with mass M on a freight train that is traveling in a straight line down a level track with an initial speed of 20 m/s. The coefficient of static friction
What is the speed of the sword spearing the fish if the swords initial velocity is 6m/s?
A single conducting loop of wire has an area of 8.9 x 10-4 m2 and a resistance of 110 O. Perpendicular to the plane of the loop is a magnetic field of strength 0.18 T. At what rate (in T/s) must this
Block 1 of mass m1 slides along a frictionless floor and into a one-dimensional elastic collision with a stationary block 2 of mass m2 = 3m1. Prior to the collision, the center of mass of the two-bl
A stationary particle(q = 2.8e-8 C) is placed in a laser beam(electromagnetic wave) whose intensity is 2.2e3 W/m^2. Determine the magnitude of the (a) Electric and (b) Magnetic forces exerted on the
For each statement below, select weather that statement describes an electric field, a magnetic field, both and electric and a magnetic field, or neither. (Note each answer is used once.) 1. The fi
As the frequency of the oscillator is varied over the range 500-1500 Hz , the wire is observed to set into oscillation only at frequency 860 Hz to 1290 Hz. What is the linear density of the wire??
What are the magnitudes of (a) the angular velocity, (b) the radial acceleration, and (c) the tangential acceleration of a spaceship taking a circular turn of radius 3220 km at a speed of 29000 km/h
a. A planet of mass m is in a circular orbit around a star of mass M. The radius of the orbit is R. The force of gravity is defined as G. What is the speed of the planet with respect to the given v
Two long straight parallel wires are oriented in a north-south direction at the same height, 50.0 cm apart, and carrying currents of 8.00 A in opposite directions.
The coefficient of kinetic friction between the crate and floor is 0.25. a) What magnitude of force must the worker apply to move the crate at constant velocity?
A mobile at an art museum has a 2.0 kg steel cat and a 4.0 kg steel dog suspended from a lightweight cable. It is found that theta one is equal to twenty degrees when the center rope is adjusted to