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Question1
You're CEO of a courier company, and you decide to select an electric car for your fleet of vehicles. A particular car has a mass of 1500kg and is powered by 26 12−V batteries connected in series, for a total of 312 V. Batteries are rated at 100 ampere-hours, that means they can deliver 100 A for 1 h, 1 A for 100 h, or any combination that equals 100A⋅h. When the batteries are connected in series, the charge output of all the batteries is similar as one battery-in this case 100A⋅h. The motor is 85 percent capable in converting electrical energy to mechanical energy in drive wheels. A test report says car can climb a 15° slope at a speed of 40km/h
Question2
A 4.8 m length of wire is coiled into a solenoid. Thee turns of solenoid are 1.1 cm in diameter. How long is solenoid when it is completely coiled? How many turns are there, assuming an integer number of turns? What is inductance of the solenoid?
An object has a kinetic energy of 237 J and a momentum of magnitude 29.3 kg·m/s. Find the speed and the mass of the object
A block is resting on a ramp with coefficient of friction between the blockand the ramp being .350, What is the max angle that the block can make without slipping
In order better to map the surface features of the Moon, a 379-kg imaging satellite is put into circular orbit around the Moon at an altitude of 1.21 × 10^2 km. Calculate the satellite\'s gravitational potential energy
A 60 ohm resistor is connected in series with a 30x10^-6 capacitor and a generator having a maximum voltage of 120 volts, what is the phase angle of the circuit
Suppose we have a uniform sphere (radius R) of 1 M of hydrogen. What is the column density through the center of the sphere
An initially uncharged air-filled capacitor is connected to a 4.01-V charging source, Find the capacitor's potential difference and charge after the insertion
Astronauts walking on the Moon are seen "bounding" rather than walking normally. Why?
A standing wave is in a open end tube. The tube length is 1.80m, determine the fundamental frequency
A boy coasts down a hill on a sled, reaching a level surface at the bottom with the speed of 8.4 m/s. If the coefficient of friction between sled's runners and snow is 0.040.
A 6.4g lead bullet traveling at 460m/s is stopped by a large tree. If half the kinetic energy of the bullet is transformed into internal energy and remains with the bullet while the other half is transmitted to the tree, what is the increase in te..
A cart of mass m = 1.4 kg is released from the top of a ramp sloped ? = 13° relative to the horizontal. The length of the ramp is L =9.6 m. find the car's Kinetic Energy at the bottom of the ramp
Two heavy pendula of mass m are suspended from strings of length l inside a railroad car of mass M that can roll freely on horizontal tracks (ignore the moment of inertia of the wheels).
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