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A 0.460- block is attached to a horizontal spring that is at its equilibrium length, and whose force constant is 21.0 . The block rests on a frictionless surface. A 5.90×10-2- wad of putty is
The suspension (four springs) of a mass 2,958 kg car sags a distance of 27.6cm when the entire weight of the car is placed on it The effective amplitude decays to 55.5% of its initial value in 3 osc
An amusement park ride consists of a large vertical cylinder that spins about its axis fast enough such that any person inside is held up against the wall whenthe floor drops away. The coefficient o
A television set draws an rms current of 2.75 A from a 60-Hz power line. (a) What is the average current? (b) What is the average of the square of the current?
If the resistivity of a wire is measured to be 2.91 x 10-8 Ωm at a temp. of 20 degrees Celsius and the temp coefficient of resistivity is 0.0057 1/C, (a.) What would be the resistivity of the wi
A very long wire carrying a conventional current of 3.9 amperes is straight except for a circular loop of radius 5.8 cm. Calculate the approximate magnitude and the direction of the magnetic field a
A 0.405-µF capacitor is connected across the terminals of a variable frequency oscillator. (a) What is the frequency when the reactance is 5.88 kO?
If you removed the original magnet, and replaced it with a magnet made of the same material, but with a mass of 30 g (magnet B), approximately what would be the magnetic field at a location 0.18 m f
If 70g of a substance at 84 degrees celsius is dropped into a container with 100 g of water at 13 degrees C, what is the specific heat capacity of the substance if the temperature of the water incre
During an aerobics class, a person gives off 1200 kJ of heat energy in 45 minutes. Assuming all this energy is used to evaporate water from the skin, how much water is lost? The latent heat of evapo
If the charge is moving at a speed of 3.7 x 104 m/s perpendicular to the magnetic field of the electromagnetic wave, find the magnitudes of the (c) electric and (d) magnetic forces exerted on the p
A source moving with a speed 34 m/s, emits a sound wave with a frequency f = 351 Hz. Determine the frequency detected by a stationary observer if the speed of sound is v = 334 m/s and the source is
A variable capacitor with negligible resistance is connected to an ac voltage source. By what factor does the current in the circuit increase if the capacitance is increased by a factor of 6.0 and t
A 12-V car battery is rated at 120 A h. Assuming that the terminal voltage remains 12 V, for how long can this battery supply power at 29 W? How much charge flows through the battery in this time? H
Suppose 200g of a substance at 90 degrees celsius is dropped into a container with 100g of water at 15 degrees celsius. What is the specific heat capacity of the substance if the temperature of the
An 0.65 kg object is attached to one end of a spring, and the system is set into simple harmonic motion. The displacement x of the object as a function of time is shown in the drawing. With the aid
If the brick has mass 1.80 {\rm kg} and is to reach a maximum height of 3.6 {\rm m} above its initial position on the compressed spring, what distance must the bricklayer compress the spring initial
The energy of a vibrating molecule is quantized much like theenergy of an electron in the hydrogen atom. The energy levelsof a vibrating molecule are given by the equation En= (n + 1/2 )
A metal loop has an area of 0.450m^2 and is placed flat on the ground. There is a uniform magnetic field pointing directly out of the ground. The magnetic field initially has a value of 0.728 T but
An electron is released from rest at a perpendicular distance of 11.4 cm from a line of charge on a very long nonconducting rod. That charge is uniformly distributed, with 6.2 µC per meter. Wh
Ammonia gas is produced commercially from the reaction of nitrogen and hydrogen. What volume of ammonia can be produced from the reaction of 5.5 x 103 kg of N2 and 1.5 x103 kg of H2?
A machine has an 810 g steel shuttle that is pulled along a square steel rail by an elastic cord . The shuttle is released when the elastic cord has 25.0 N tension at a 45 degree angle. What is the
A bicycle tire is filledto a pressure of 4.42atm(65psi) at a temperature of 12 degrees celsius. If the temperature of the tire increases to 33 degreecelsius, what is the pressure in the tire? Assume
The protons are emitted nearly at rest from a source at the center and are accelerated through 600 V each time they cross the gap between the dees. The dees are between the poles of an electromagne
The magnetic field produced by the solenoid in a magnetic resonance imaging (MRI) system designed for measurements on whole human bodies has a field strength of 5.0 T, and the current in the solenoi