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A ball is shot from the ground into the air. At a height of 9.4 m, the velocity is observed to be v = (7.8)i + (5.1)j in meters per second (i horizontal, j upward). A) To what maximum height will the ball rise? B) What will be the total horizontal distance traveled by the ball? C) What is the velocity of the ball (direction and magnitude) the instant before it hits the ground? That is what its i-component is? D) What is its j-component?
A 440 N uniform rectangular sign4.00 m wide and 3.00 m high is suspended from a horizontal,6.00-m-long, uniform, 90-N rod as indicated in the figure below. The left end the rod is supported by a hinge and the right end is supported with a thin cable ..
A step-down transformer produced a voltage of 9.0 V across the secondary coil when the voltage on the primary coil is 120 V. Whatvoltage would appear across the primary coil of this transformer if120 V was applied to the secondary coil?
An ideal gas at 26.9°C and a pressure 1.60 105 Pa is in a container having a volume of 1.00 L. Find the number of moles of gas
A block of unknown material is submerged in water. Light in the water is incident on the block at an angle of 31°. The angle of refraction in the block is 27°. What is the index of refraction of the unknown material?
a geothermal power plant is supplied with water at a well bottom temperature of 225 degrees c and a pressure of 8 mpa.
Charge q is moving at constant speed v along the positive x-axis, Find the Cartesian components of the magnetic field at a point (x,y,z) for t > 0
Three blocks, each having a mass of 1.21 kg, are connected by rigid rods of negligible mass and are supported by a frictionless surface. Forces F1 and F2, of magnitude 4.95 N and 11.6 N respectively, find The magnitude of the force applied by the r..
A test rocket is fired vertically upward from a well. A catapult gives it an initial velocity of 79.5 m/s at ground level. Subsequently, its engines fire and it accelerates upward at 4.10 until it reaches an altitude of 920 m. At that point its engin..
A projectile is fired with an initial speed of 65.9 m/s at an angle of 37.8 degree above the horizontal on a long flat firing range. Determine the total horizontal distance covered (that is, the range)
A mirror produces an image that is located 48.00 cm behind the mirror when the object is located24.00 cm in front of the mirror. What is the focal length of the mirror?
A farsighted person has a near point that is 48.0 cm from her eyes. Find the focal length of the eyeglasses
A girl floats in a lake with 97 percent of her body beneath the water. Calculate her weight density
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