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A rectangular loop of wire of 6.6 cm by 8.0 cm in a uniform magnetic field of magnitude 1.6T. The loop is rotated from a position of zero magnetic flux to a position of maximum flux in 20ms. What is
A "195-watt" light bulb uses an average power of 195 W when connected to an rms voltage of 120 V. (a) What is the resistance of the light bulb?
A weather balloon is designed to expand to a maximum radius of17m at its working altitude, where the air pressure is 0.030 atm and the temperature is 200 K. If the balloon is filled at atmospheric p
For each mole of glycine that burns, 973.49 kJ of heat is liberated. Use this information, plus values of ΔHf° for the products of combustion, to calculate ΔHf° for glycine.
They count 15 crests that pass by the raft in 19 s. How fast are the waves moving?
A phone cord is 3.08 m long. The cord hasa mass of 0.193 kg. A transverse wave pulse is produced by plucking one end of the taut cord. The pulse makes four trips down and back along the cord in 0.8
The shells fired form an artillery piece have a muzzle speed of 150 m/s, and the target is at a horizontal distance of 2.00 km. (a) At what angle relative to the horizontal should the gun be aimed?
The equation for the frequency f of oscillation of simple pendulum is f = 1/2p *vg/L, Where L is the length of the pendulum string and g is the acceleration due to gravity. Frequency is commonly exp
Can a photon and an electron of the same momentum have the same wavelengths? Calculate their wavelengths if the two have the same energy.
How much work must the spacecraft engines perform to move the spacecraft to a circular orbit that is 4480 km above the surface?
The molarity of 25% ammonium, hydroxide is 13.4 M. Both are sold in 2.5 L bottles. If there were an accident and the two bottles broke and the acid and base mixed, how much heat would evolve?
The force (but not the power) required to tow a boat at constant velocity is proportional to the speed. If a speed of 3.3 km/h requires 6.6 kW, how much power (in kilowatts, kW) does a speed of 8.8
An object is in front of a converging lens (f = 0.40 m). The magnification of the lens is m = 2.1. Relative to the lens, through what distance should the object be moved so that the magnification ch
An electron is fired with speed 2400 m/s into a region of uniform electric field with magnitude 8 N/C. Assuming the electron's initial velocity is in the same direction as the electric field, how lo
A bug that has a mass mb = 3 g walks from the center to the edge of a disk that is freely turning at 20 rpm. The disk has a mass of md = 13 g. If the radius of the disk is R = 23 cm, what is the new
Write the balanced chemical equation for the reaction in the calorimeter. How many joules were liberated by the reaction?
A luminous object is 3.40m from a wall. You are to use a concave mirror to project an image of the object on the wall, with the image 2.27 the size of the object.
A spherical, concave shaving mirror has a radius of curvature of 33.0 cm. What is the magnification of a person's face when it is 14.5cm to the left of the vertex of the mirror? Where is the image?
A magnetic field is oriented at an angle of 37 degrees to the normal of a rectangular area 4.5 cm by 7.0 cm. If the magnetic flux through this surface has a magnitude of 5.2 x 10 to the -5 T times m
Your monthly electric bill is probably expressed in kilowatt-hours (kWh), a unit of energy delivered by the flow of 1 kW of electricity for 1 h. How many joules of energy do you get when you buy 4 k
A 120-V motor has mechanical power output of 2.50 hp. It is 90% efficient in converting power that it takes in by electrical transmission into mechanical power.
X-rays are scattered from a target at an angle of 48.5° with the direction of the incident beam. Find the wavelength shift of the scattered x-rays.
A force of 75N is applied horizontally to a box of mass 10kg, moving with an initial speed of 4m/s on a level surface with coefficient of kinetic friction= 0.3. What is the magnitude of the accelera
When responding to sound, the human eardrum vibrates about its equilibrium position. Suppose an eardrum is vibrating with an amplitude of 6.75 10-7 m and a maximum speed of 2.98 10-3 m/s. What is th
Laser light of wavelength 635 nm is incident upon two narrow slits separated by .14 mm. On a screen 4.1 m beyond the slits, how far apart are the interference fringes? (in m)