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A rope is attached to a car and pulled with a 75 N force at an angle of 15 degrees NE. A second rope is attached to the car and pulled with a force of 68N at an angle of 20 degrees SE. Friction is 40N What is the net force and what is its direction?
An optical disk drive in your computer can spin a disk up to 10,000 rpm (about 1045 rad / s), what is the magnitude of the average angular acceleration of the disk
A woman walks for 4 min directly north with a average velocity of 6 km/h; then she walks eastward at 4 km/h for 10 min. What is the magnitude of her average velocity
question1the unique temperature of the water in the large bowl was 25degc. the temperature of a molecule that changes
Coherent light from a sodium-vapor lamp is passed through a filter that blocks everything except for light of single wavelength. It then falls on two slits separated by 0.410 . In resulting interference pattern on a screen 2.10 away, adjacent bri..
An opera singer in a convertible sings a note at 600 whereas cruising down the highway at 81. What is the frequency heard by a person standing beside the road in front of car? What is the frequency heard by the person standing beside the road behi..
An ac generator with a frequency of 135Hz and an rms voltage of 20.5V is connected in series with a 11.0 kOhms resistor, What is the rms current in this circuit
What is the rms current in an RL circuit when a 60.0Hz 240V rms ac voltage is applied, What is the phase angle between voltage and current
A solid wire with a radius of 3.00 mm carries a current of 0.0530 A. Assume the current is uniformly distributed in the wire. obtain the magnetic field strength at the center of the wire
A 75.0 kg patient is running a fever of 105°F and is given an alcohol rub to lower the body temperature. determine the mass of alcohol necessary to lower the body temperature down to 102°F
A man pushes a box with a constant horizontal force. The mass of the box is 150 kg, the coefficient of kinetic friction between the box and the floor is 0.25, Find the work done by the man
q1. a train at rest emits a sound at a frequency of 1045 hz. an observer in a car travels away from the sound source at
q1. the sport with the fastest moving ball is jai alai where measured speeds have reached 303kmh. if a professional jai
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