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The ballistic pendulum was used to measure the speeds of bullets. It consists of a large block of wood of mass M = 5.4 kilogram, hanging from two long chords. A bullet of mass m = 9.5 gram is fired into the block, coming quickly to rest. The block + bullet then swing upward, their center of mass rising a vertical distance h = 6.3 centimeter before the pendulum comes momentarily to rest at the end of its arc. Find the speed of bullet just prior to collision?
A skateboarder slides down a frictionless ramp inclined at an angle of 30 degree to the horizontal. Obtain how far up the second incline will him go
A baseball is thrown with a velocity of 31 m/s at an angle of 40o from a height of 1.8 meter. Find the vertical and horizontal velocity components
The mass of the Moon is 7.4 x 10^22 kilogram and its mean radius is 1.75 x 10^6 meter. Find the acceleration due to gravity at the surface of the Moon
The volume rate of a flow in a horizontal pipe is 4.0 L/s. The diameters of the pipe at points A and B are 4.0 cm and 5.0 cm, respectively. Discover a) the speeds of the flow at points A and B; b) the dissimilarity in pressure between the two points,..
The gravitational attraction between two objects varies directly as the product of their masses and inversely as the square of the distance between them. Determine the force of attraction between two spheres
A grandfather clock is controlled by a swinging brass pendulum that is 1.1 m long at a temperature of 30.°C. What is the length of the pendulum rod when the temperature drops to 0.0°C?
Pushing on the pump of a soap dispenser compresses a small spring. When the spring is compressed 0.50 cm, its potential energy is 0.0025 J.
Find what average power beaded to accelerate a 650 kilogram car from 0 to 65 mi/h in 5.5 s? Suppose that all forms of frictional losses can be ignored
Ricardo, mass 80 kilogram, and Carmelita, who is lighter, are enjoying Lake Merced at dusk in a 30 kilogram canoe. determine Carmelita mass
The spring in a clothespin is compressed 0.40 cm, storing energy in the form of spring potential energy. If the spring is compressed twice as far, the spring potential energy increases with 0.0046 J. What is the force constant, k, for this spring?
two charges e and -e are a distance of 0.620 nm apart in an electric field e that has a magnitude of 3.55 knc and is
In a certain time, light travels 4.78 km in a vacuum. During the same time, light travels only 2.37 km in a liquid. What is the refractive index of the liquid
Trin has been prescribed bi-focals because his near point is at 2 m instead of 25 cm and his far point is at 10 m instead of infinity. Describe what's wrong with his eyes
Four equal point charges of +3.0 uC are placed in air at the our corners of a square that is 40cm on a side. find the force on any one of the charges
A cannon with mass of 2000kg fires a 10kg shell at an angle of 60 degrees above the horizontal. what is the velocity of the cannon ball
A roller coaster car of mass 250 kg has a speed of vo = 12 m/s at point A, located at a height of h = 15 m. find the speed of the car when it reaches point B. use energy ideas
The filament in an incandescent light bulb is made from tungsten. The light bulb is plugged into a120 V outlet and draws a current of0.76 A. If the radius of the tungsten wire is 0.0024 mm, how long should the wire be?
A 8.59 kg sphere of radius 6.57 cm is at a depth of 2.92 km in seawater that has an average density of 1025 kg/m3. Define the (a) gauge pressure, (b) total pressure, and (c) corresponding total force compressing the sphere's surface?
During a sleet storm, the roads are covered with frictionless ice. A car of mass 1000 kg traveling east at a speed of 6m/s slams into a stationary truck of mass 2000kg. Determine the velocity of the truck just after the collision
A high diver leaves the end of a 5-m-high diving board, and strikes the water 1.3 s later, 3 m beyond the end of the board. determine the velocity with which she enters the water
A trees image on a 35mm color slide is 1.8mm high. It is to beprojected onto a screen 3m from the slide and will appear 493mmhigh. What is the magnification of the system
Hydrogen under p = 5 atmospheres and T = 20 C is warmed isobarically until its volume increases from 1 to 2 liters. Calculate the absorbed heat.
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