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An electron moving through an electric field experiences an acceleration of 7100 × 10^3 m/s^2. Find the magnitude of the electric force acting on the electron.
A tennis player standing 12.6 m from the net hits the ball at 3.27° above the horizontal. To clear the net, the ball must rise at least 0.458 m. If the ball just clears the net at the apex of it
Car A and Car B, each traveling along a freeway in adjacent lanes, undergo constant acceleration. At some instant, the velocity of car A exceeds the velcoity of car B.
Is the net electric flux through the loop due to the charges positive, negative, or zero? Explain your reasoning.
There is a loop held to the right of a positive point charge. i) Draw and label an area vector for the surface bounded by the loop ii) Sketch electric field lines to represent the electric field due
Take theta = 45 (deg). r=80mm, 300mm from A. Determine the magnitude of the resultant force. b)Determine the moment of the resultant forse about the point A.
The drawing shows a square, each side of which has a length of L = 0.25 m. Two different positive charges q1 and q2 are fixed at the corners of the square. Find the electric potential energy of a th
A particle is uncharged and is thrown vertically upward from ground level with a speed of 25.6 m/s. As a result, it attains a maximum height h.
How much work Wground-cloud is done on the charge by the electric force?
During a particular thunderstorm, the electric potential between a cloud and the ground is Vcloud - Vground = 2.2 x 108 V, with the cloud being at the higher potential. What is the change in an elect
The capacitor is 2.00 cm long, and its plates are separated by 0.150 cm. Assume that the electric field between the plates is uniform everywhere and find its magnitude.
You need to prepare a 0.151-mm-diameter tungsten wire with a resistance of 2.83 k? How long must the wire be? The resistivity of tungsten is 5.62 × 10-8 m. Please show how you derived the answ
The spring is released slowly, until it reaches equilibrium. The equilibrium length of the spring is 0.058 m. What is the magnitude of the external electric field?
A proton and an electron are moving due east in a constant electric field that also points due east. The electric field has a magnitude of 7.0 × 104 N/C. Determine the magnitude of the acceler
The particles are evenly spaced with 0.0758 m between electrons and 0.0832 m between protons. Assuming that there are no collisions and that the interactions between the particles are negligible, wh
What is the magnitude of the electric field within the cell membrane?
A wire has a current density of 6.59 × 10^6 A/m2. If the cross-sectional area of the wire is 1.05 mm2, what current does the wire carry?
Two resistors, 116 ohms and 25000 ohms, are rated for a maximum power output of 1.7 W and 0.50 W, respectively. What is the maximum voltage that can be safely applied to each resistor?
(a) How much heat must be absorbed by the ice before it melts? (b) If the outer surface of the ice chest is at 33.0° C, how long will it take for the ice to melt?
It has a power requirement of 4500 W and a current requirement of 37.5 A when wired to a 240 V household supply. (a) If the cost of electricity is $0.15/kWh, what is the cost of operating the heater
Find the rate at which heat is removed from an ice cube by radiation just as the water begins to freeze.
(a) If the cost of electricity is $0.15/kWh, what is the cost of operating the heater during a 30-day month? (b) What is the resistance of a typical water heater?
Alpha particles of charge q = +2e and mass m = 6.6 x 10-27 kg are emitted from a radioactive source at a speed of 1.5 x 107 m/s. What magnetic field strength would be required to bend them into a circ
Three hours later, the course of the hurricane suddenly shifts due north, and its speed slows to 26.0 km/h. How far from Grand Bahama is the hurricane 4.20 h after it passes over the island?