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An airplane is flying with a velocity of 86.0 m/s at an angle of 20.0 degrees above the horizontal. When the plane is a distance 105 m directly above a dog that is standing on level ground, a suitc
Its found that string is set into oscillation only at the frequency 880hz and 1320hz as the frequency of the oscillator is varied over the range 500-1500hz. what is the tension in the string?
As a result of the collision, the first ball moves at 50.0 cm/s, and the second ball stops. What is the change in kinetic energy?
When one gallon of gasoline is burned in a car engine, 1.18 108 J of internal energy is released. Suppose that 0.99 108 J of this energy flows directly into the surroundings (engine block and exhau
A superconducting solenoid is to be designed to have an interior field of B= 29T with a maximum current of I=1000A. How many windings are required on a 1-meter solenoid lenth?
A heavy piece of hanging sculpture is suspended by a 92 cm long, 4.2 g steel wire. When the wind blows hard, the wire hums at its fundamental frequency of 80 Hz. What is the mass of the sculpture?
A charge of 6.00 μC is placed at the origin. (a) Find the electric field at the point (3.00, 4.00) m. (b) What force does a test charge of 3.50 μC experience at the point (10.0, -3.00) m? Exp
Since the mass would not make it around the loop if released from the height of the top of the loop (do you know why?) it must be released above the top of the loop-the-loop height. (Assume the mass
Tarzan doesn't know that the vine has a breaking strength of 1.0 103 N. What is the total force Tarzan excerts on the vine?
What happens to a contracting cloud when its thermal energy can no longer escape the cloud's interior in the form of photons? How does the trapped thermal energy affect the process of star formatio
A car of mass 2100 kg collides with a truck of mass 4200 kg, and just after the collision the car and truck slide along, stuck together. The car's velocity just before the collision was < 32, 0,
You are driving to the grocery store at 20 {rm m}/{rm s}. You are 150 {rm m} from an intersection when the traffic light turns red. Assume that your reaction time is 0.79 {rm s} and that your car b
What is the frequency of the note played by this pipe? When a second pipe is played at the same time, a 1.30 Hz beat note is heard. By how much is the second pipe too long?
A 8kg mass moves in a circular path of 4m radius on a frictionless horizontal table. It is attached to a string that passes through a frictionless hole in the center of the table. A second 28kg mas
An automobile club plans to race a 770 kg car at the local racetrack. The car needs to be able to travel around several 160 m radius curves at 85 km/h. What should the banking angle of the curves be
The magnetic field in the beam has a magnitude of at the same time. Write B in terms of unit vectors.
The two cars skid together a distance of 25 m before stopping. If the effective coefficient of friction is 0.74, how fast was the drunk going just before the collision?
If he reached maximum height over the middle wheel, by how much did he clear it? (c) How far from the cannon should the net's center have been positioned (neglect air drag)?
Two cars, one of mass 1500 kg, and the second of mass 2200 kg, are moving at right angles to each other when they collide and stick together. The initial velocity of the first car is 11 m/s in the
Determine the steady-state electric field inside each Nichrome wire. Remember that in the steady state you must satisfy both the current node rule and energy conservation. These two principles give
From the time the monkeys stop pushing the box slides 12.3 meters before it comes to a stop. If the u of k of the contact is 0.21, what is the mass of the sled?
A particle with a mass of 3.65×10^-24 kg and a charge of 6.40×10^-19 C starts at rest and is accelerated for a distance of 0.0820 m through a uniform electric field having strength E =
The springs are ideal and massless, and the linear speed of block is 2.0 m/s. If the spring constant of spring 1 is equal to 30 N/m, the unstretched length of spring 1 is closest to?
An 26 g rifle bullet traveling 370 m/s buries itself in a 4.8 kg pendulum hanging on a 2.6 m long string, which makes the pendulum swing upward in an arc. Determine the maximum vertical displacemen
Forces of 11.7 N north, 19.7 N east, and 16.0 N south are simultaneously applied to a 4.48 kg mass as it rests on an air table. What is the direction of the acceleration in degrees? (Take east to b