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Find the electric force exerted by one sphere on the other.
A tensile (stretching) force of 400 is applied to each end of the wire. What is the minimum diameter required? assuming young's modulud for steel to be Y = 2.00e11Pa.
Determine the time necessary for the projectile to reach its maximum height. Determine the maximum height reached by the projectile. Determine the horizontal and vertical components of the velocity ve
A .800 kg block is attached to a spring with spring constant 16.0 N/m. While the block is sitting at rest, a student hits it with a hammer and almost instantaneously gives it a speed of 41.0 cm/s.
Two point charges of magnitude 5.0 uC and -3.0 uC are separated by 35.0 cm. what is the potential difference between a point infinitely far away and a point midway between the charges?
If the 50 kg student sits on a sled on a 60 degree hill, but another student pulls upward with a force of 524.35 Newtons, what would the student's acceleration be?
An airplane must reach a speed of 190 mi/h to take off. If the runway is 496 m long, what is the minimum value of the acceleration that will allow the airplane to take off successfully?
A 14.0-Ω resistor, 11.5-mH inductor, and 110-µF capacitor are connected in series to a 45.0-V (rms). What is the inductive reactance of the circuit at this frequency?
An electric motor rotating a workshop grinding wheel at a rate of 227 rev/min is switched off. Assume constant angular deceleration of magnitude 2.72 rad/s2. Through how many revolutions does the w
A radar transmitter contains an LC circuit oscillating at 6.40 1010 Hz. What is the common reactance of the loop and capacitor at resonance?
An iron bolt of mass 63.5 g hangs from a string 32.7 cm long. The top end of the string is fixed. Without touching it, a magnet attracts the bolt so that it remains stationary, displaced horizontal
(a) What is the magnitude of the net force on the student? (b) What is the magnitude of the contact force on the student by the backpack?
A series RLC circuit has a resistance of 12 Ω and an impedance of 75 Ω. If the rms voltage applied to the circuit is 120 V, what average power is delivered to the circuit?
David is driving a steady 28.0m/s when he passes Tina, who is sitting in her car at rest. Tina begins to accelerate at a steady 2.70 at the instant when David passes. How far does Tina drive before
A canoe has a velocity of 0.310 m/s southeast relative to the earth. The canoe is on a river that is flowing at 0.570 m/s east relative to the earth. Find the magnitude of the velocity vec{v}_{rm c/
Find T_{rm b} - T_{rm t}, the difference between the magnitude of the tension in the string at the bottom relative to that at the top of the circle.
A 365 N force is applied horizontally to a 64.0 N box which experiences a force of friction of 335 N. What is the magnitude of the acceleration of the box?
A driver traveling at 44.0 in a school zone can brake to an emergency stop in 2.80 . What would be the braking distance if the car were traveling at 50.0 ?
A convex mirror has a focal length of -15 cm. A lightbulb with a diameter of 5.2 cm is placed 60.0 cm in front of the mirror. Locate the image of the lightbulb.
An electric motor rotating a workshop grinding wheel at 1.10 102 rev/min is switched off. Assume the wheel has a constant negative angular acceleration of magnitude 1.98 rad/s2
Two point charges, Q_1 = -6.7 mu C and Q_2 = 1.5 mu C are located between two oppositely charged parallel plates, as shown in the figure . The two charges are separated by a distance of x = 0.35 m.
An engine is approaching a hill at a constant speed. when it is at distance of .9km,it blows a whistle,whose echo is heard by the driver after 5 sec. If the speed of sound is 340m/s, calculate the
A person lifts a 3.60 kg textbook (remember when they were made of paper and so heavy?) with a 52.0 N force at a 60.0° angle from the horizontal. (a) Draw a free-body diagram of the forces acti
A parallel-plate capacitor has plates of area 0.22 m2 separated by a distance of 0.004 m. What is the strength of the electric field between these plates when this capacitor is connected to a 10-V
How much time would it take for her to emit a net radiant energy from her body that is equal to the energy contained in this dessert?