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A 20 kg block is pulled across a horizontal surface by a rope. The block has an acceleration of 2.3 m/s2 and the coefficient of kinetic friction is 0.16. Decide the tension in the rope.
A toy cannon uses a spring to project a 5.23 g soft rubber ball. The spring is originally compressed by 4.90 cm and has a force constant of 8.04 N/m. At what point does the ball have maximum speed
A defibrillator is used during a heart attack to restore the heart to its normal beating pattern, How many electrons pass through the wires connected to the patient
An accelerometer in a control system consists of a 3.65-g object sliding on a horizontal rail. Find the force constant required for the spring
In a rectangular coordinate system a positive point charge q = 6.00 * 10^-9 C is placed at the point x = +0.150m , y = 0, Find the magnitude of the electric field at the origin
The reflecting surfaces of two mirrors form a vertex with anangle of 130^\circ. If a ray of light strikes mirror 1 with an angle of incidenceof 48^\circ, find the angle of reflection of the ray when it leaves mirror2.
A water heater consisting of a metal coil that is connected across the terminals of a 21.0-V power supply is able to heat 160. What is the resistance of the coil
he triceps muscle in the back of the upper arm extends the forearm. What is the moment of inertia of the boxer's forearm
The mass of the Space Shuttle orbiter is 8.8 x 104 kgand the period of its orbit is 82 minutes. Estimate thekinetic energy of the orbiter and the work done on it by gravitybetween the launch and orbit.
Determine the eccentricity of the orbit of Uranus
Two identical +9.5uC point charges are initially 3.5cm from each other. If they are released at the same instant from rest, hoe fast will each be moving when they are very far away from each other? suppose they have identical masse of 1mg.
A battery supplies 0.71 A to three resistors connected in parallel. What is the exact current (in A) through the third resistor
What is the magnitude of the external force essential to hold a 2 kg cart motionless at the top of a 2m high incline which is 30 degrees.
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