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A projectile is shot from the edge of a cliff 140 m above ground level with an initial speed of 100 m/s at an angle of 37 degrees with the horizontal. Find out the time taken by the projectile to hit point at ground level.
assume a bar 2.5 m long expands 0.5 cm when heated. By how much will a bar 100 m long of the same material expand when similarly heated.
A certain string just breaks while it is under 25 N of tension. A boy uses this string to whirl a 0.75-kg stone in a horizontal circle of radius 2.00 m. The boy continuously increases the speed of the stone. At about what speed will the string bre..
Two point charges 2.4 and 6.50 are 0.10 apart. Point is midway between them; point is 8.00×10-2 from and 6.00×10-2 from . Take the electric potential to be zero at infinity. Find out the work done by the electric field on a charge of 2.50 that tra..
Where is center of mass of the system
What is the acceleration experienced by 0 tip of the 1.50 cm long sweep second hand on your wrist watch? In M/s^2.
A 0.2kg aluminum plate, initially at 20C, slides down at a 15.00 m long surface, incline at a 30 degree angle to the horizontal. The force of kinetic friction exactly balances the component of gravity down the plane so that the plane.
A 3.5 k and a 1.5 k resistor are connected in parallel and this combination is connected in series with a 1.8 k resistor. If each resistor is rated at 1/2 W, what is the highest voltage that can be applied across the whole network.
An ocean liner leaves New York City and travels 37.0° north of east for 171 km. How far east and how far north has it disappeared? In other words, what are the magnitudes of the components of the ship's displacement vector in the directions.
A fluid in an insulated, flexible bottle is heated by a high resistance wire and expands. If 9kJ of heat is applied to the system and it does 5kJ of work, how much does the internal energy change?
The first person is initially moving forward with a speed of 2.5m/s and second person is initially at rest. What are the velocities of the two people after the snowball is swapped? Disregard friction between the skate and the ice.
With what velocity does the wrench strike the ground. What is magnitude and direction of the boat's acceleration? Enter a positive answer for a direction due west, or a negative answer for a direction due east.
The acceleration of gravity is 9.81 m/s^2. Assuming that air resistance is simply a constant 96 N force on the person during the fall, identify the person's velocity just before hitting the net. Answer in units of m/s.
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