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Two spheres with masses m1 = 820 kg and m2 = 830 kg are separated by 0.230 m. What is the net gravitational force from them on a 3.0 kg sphere located 0.161 m from m1 and 0.069 m from m2? Use a + sign if the direction is towards m2 and a - sign if the direction is towards m1.
Two speakers, one directly behind the other, are each generating a 340 Hz sound wave. The speakers are being driven out of phase. What is the smallest separation distance (that is greater than zero) among the speakers that will produce constructive i..
What maximum output would you expect from a wind turbine with a blade of radius 15 ft in a 25 mph wind
a jet cruising at 26400 feet descends 96 miles away from a jet cruising at 31680 feet which is 120 miles from logan
The toadfish makes use of resonance in a closed tube to produce very loud sounds. The tube is its swim bladder, used as an amplifier. Calculate the intensity of the sound wave emitted
Find the maximum acceleration a car can undergo if the coefficient of static friction between the tires and the ground is 0.90
A 60 kg woman stands 2.5m from the center of a horizontal turntable. The turntable's mass is 150 kg and its radius is 4 m. Initially they are both at rest, what is the turntable's angular speed with respect to the ground if she starts walking clockwi..
A dolphin in 25 degrees C sea water emits a sound directed toward the bottom of the ocean 213 m below. How much time passes before it hears an echo? The speed of sound in sea water is 1530 m/s.
An air rifle uses aspring to shoot a 5.0 gram projectile straight up in the air. what was the average force of air resistance on the projectile
the electric potential energy stored in the capacitor of a defibrillator is 56 j and the capacitance is 130 microf.
A block of mass m slides at velocity vo across ahorizontal frictionless surface toward a large curved movable rampof mass 3m as shown in Figure 1. The ramp, initially at rest, alsocan move without friction and has a smooth circular frictionless fa..
When G was first measured by Henry Cavendish, newspapers of the time hailed his experiment as "weighing Earth experiment." And Why.
a carpenter has been asked to build an open box with a square base. the sides of the box will cost 4 per square meter
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