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A loudspeaker of mass 17.0 is suspended a distance of = 1.60 below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of = 3.50. What is the tension in each
A 8.6 cm focal length converging lens is used to magnify small newspaper print 2 mm high. Calculate the height of the image for the maximum angular magni?cation for a normal eye. Assume the eye foc
A 4.7-g object moving to the right at 38 cm/s makes an elastic head-on collision with a 9.4-g object that is initially at rest. What is the velocity of the 4.7-g mass after the collision? What fractio
How far away from the equipment would you need to work in order to insure that the radiation exposure at your position was not greater than 1 mrem/hr?
A 0.57-kg object connected to a light spring with a force constant of 23.6 N/m oscillates on a frictionless horizontal surface. Determine the maximum speed of the object.
A cockroach of mass m lies on the rim of a uniform disk of mass 5 m that can rotate freely about its center like a merry-go-round. Initially the cockroach and disk rotate together with an angular ve
A proton initially moves left to right long the x-axis at a speed of 2 E 3 m/s. What acceleration magnitude does the proton experience?
Determine the time constant of the circuit. Express your answer in terms of , , and . Recall that natural logarithms are entered as ln(x).
A stone (mass = 0.3 kg) is dropped from height 10 m in Earth's gravity, with initial velocity 0. Calculate its kinetic energy when it hits the ground.
The same forces are applied to a wire of the same material but with three times the diameter and three times the length. How much does the second wire stretch?
If the player comes to rest at third base, how much work was done on the player by friction? What was the coefficient of kinetic friction between the player and the ground?
A car (m = 1830 kg) is parked on a road that rises 10.7 ° above the horizontal. What are the magnitudes of (a) the normal force and (b) the static frictional force that the ground exerts on the
What is the ratio of the electrostatic force on the left ball in experiment 2 (F2) to the electrostatic force on the left ball in experiment 1 (F1)?
A 208- projectile, fired with a speed of 100 at a 56.0 angle, breaks into three pieces of equal mass at the highest point of its arc (where its velocity is horizontal). Two of the fragments move wi
The momentum of a system that consists of two massive particles is zero. If one of the particles has mass 3.0 kg and is moving along the x-axis with velocity -0.5 m/s (i.e., it is moving to the lef
Ricardo notices that the canoe moved 54.3 cm relative to a submerged log during the exchange and calculates Carmelita's mass, which she has not told him. What is it?
Calculate the uncertainty of (3.0 +/- 0.1) x (2.5 +/- 0.15)^3 + (sqrt(3100 +/- 1000). Assume all uncertainties are independent and random.
A 0.650 kg block is attached to a spring with spring constant 18.0 N/m. While the block is sitting at rest, a student hits it with a hammer and almost instantaneously gives it a speed of 43.0 cm/s.
For this time, calculate the average magnetic flux through each turn of the inner solenoid? For this time, calculate the mutual inductance of the two solenoids? For this time, calculate the emf induce
Suppose that the airspeed of the plane is now 234 km/h and after 0.500 hours the pilot finds themself over a town that is 119 km west and 18 km south of their starting point. What is the magnitude
Describe a typical day in your life from the time you wake up, until the time you go to bed. Describe how science impacts you and your routine throughout the day.
A Cumulonimbus cloud (a thunderhead) can contain 109 kg of water. They have a vertical thickness that stretches from around 2,000 m to about 10,000 m above the ground. If one assumes that Cumulonimb
What is the acceleration of two falling sky divers (mass 110.0 kg including parachute) when the upward force of air resistance is equal to one-fourth of their weight?
A train has a length of 93 m and starts from rest with a constant acceleration at time t = 0 s. At this instant, a car just reaches the end of the train. The car is moving with a constant velocity.
The first-order bright fringe is at 4.84 mm from the center of the central bright fringe. For what wavelength of light will the first-order dark fringe be observed at this same point on the screen?