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A certain string just breaks when it is under 25 N of tension. A boy uses this string to whirl a 2-kg stone in a horizontal circle of radius 3 m. The boy continuously increases the speed of the stone. At approximately what speed will the string break?
Two pole-vaulters just clear the bar at the same height. Thefirst lands at a speed of 7.07 m/s, while the second lands at aspeed of 7.50 m/s. The first vaulter clears the bar at a speed of1.92 m/s.
A truck is traveling at 11.1 m/s down a hill when the brakes on all four wheels lock. How far does the truck skid before coming to a stop
a 210 g bucket containing 12.5 kg of water is hanging from a steel guitar string with mass m 8.58 g density p 7750
A spool whose inner core has a radius of 1.00 cm and whose end caps have a radius of 1.50 cm has a tightly wound inner core. what is the angular speed of the spool
A construct force vector F = 2.0i + 4.0j N acts on an object as it means along a straight- line path. If the object is displacement is d = 2.0i + 5.0j m calculate the work done by vector F
a concrete slab is 11.1 cm thick and has an area of 4.2 m2. electric heating coils are installed under the slab to melt
a speedboat starts from rest and accelerates at 2.01 ms2 for 7.35 s. at the end of this time the boat continues for an
A 12 V battery is connected by a switch (not shown) in series to an inductor (inductance 400 mH) and a resistor (resistance 250 ohms). what is the rate of change of current
a small object is released from rest and falls 1.00 times 102 feet near the surface of the earth. neglect air
one of your summer lunar space camp activities is to launch a 1130-kg rocket from the surface of the moon. you are a
Atomic physics, you begin with 227 over 89. Then there is an alpha decay, What isotope is left after EACH of the decays
The three ropes shown are tied to a small, very light ring that is stationary. Two of these ropes are anchored to walls at rightangles with the tensions shown in the figure. What is the magnitude of the tension T3 in the third rope, ifT1 = 56.3 N,..
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