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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
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)
Suppose that the steel gas tank in your car is completely filled when the temperature is 14° C. How many gallons will spill out of the twenty-gallon tank when the temperature rises to 32°
Question: A man leaps from the top of a 60 meter tall building. If his initial speed is 24 m/s and at an angle of 23 degrees above the horizontal, then with what speed does he hit the ground as he l
The handle of a grinding wheel goes around a circle with a circumference of 1.2m. If it requires a force of 120N to turn the handle at a steady rate, how much work is performed each revolution?
The 6.0 kg object below is released from rest at a height of 5.0 m on a curved frictionless ramp. At the foot of the ramp is a spring of force constant k = 350 N/m.
A long, straight wire of non-negligible radius R carries a current I. Use Ampere's law to derive an expression for the magnetic field inside this wire as a function of the distance r from the center
A 1kg mass hangs from a cord wrapped around a solid disk pulley with a mass of 3kg and radius 25cm. The cord is 2m long and it's entire length is wrapped such that the weight is just touching the ed
At one time television sets used "rabbit-ears" antennas. Such an antenna consists of a pair of metal rods. The length of each rod can be adjusted to be one-quarter of a wavelength of an electromagne
Train 2 blows its horn, emitting a frequency of 500Hz. What is the frequency heard by the engineer on train? (please show work for credit)
If the observer knows his/her speed is 25.0 m/s and the temperature is 30°C, and hears a frequency of 450.0 Hz, what is the frequency heard by the source. (Please provide calculations to compare
During a tug-of-war, team A pulls on team B by applying a force of 1150 N to the rope between them. How much work does team A do if they pull team B toward them a distance of 2.55 m?
A 75kg student is standing atop a spring in an elevator that is accelerating upward at 3.0m/s^2 The spring constant is 2300 N/m. By how much is the spring compressed?
Determine the distance from the surface of the earth to the surface of the moon.
A 0.2kg steel ball is dropped straight down onto a hard horizontal floor and bounces straight up. The ball's speed just before and just after impact with the floor is 10m/s. Determine the magnitude
Question: A rotating wheel requires2.90s to rotate through 37.0 revolutions. Its angular speed at the end of the2.90s interval is98.2rad/s. What is the constant angular acceleration of the wheel?