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A 1.00 kg object is attached to a horizontal spring. The spring is initially stretched by 0.500 m, and the object is released from rest there. It proceeds to move without friction. The next time the
Using a rope, a child holds a sled at rest on a 30.0 degree inclined frictionless, snow-covered hill. A) if the sled weighs 77.0 N, find the force exerted by the rope.
The photograph in the figure below is a short-time exposure (1/31 s) of a juggler with two tennis balls in the air. (Take the diameter of the tennis ball to be 6.5 cm. (a) The tennis ball near the t
The mass of an atom oscillating at a frequency of 8.6 x 1011Hz in its lattice is 1.2 x 10-26 kg. If the amplitude of its oscillations is 0.045nm, find (a) its total energy in joules and eV, (b) its
The equation of oscillation of a mass-spring system is x(t) = 0.3cos(4t - 0.7) where x is in meters and t in seconds. The spring constant is 15N/m.
A mass attached to a spring oscillates according to the equation: x(t) = 24sin(16t + 0.50) where x is in cm and t in seconds. Find (a) the velocity and acceleration of the mass when x = 6.0cm for th
Use the laws of classical mechanics to solve this problem. An atom of mass m moves in positive x direction with speed v. It collides with and sticks to an atom of mass n * m moving in positive y direc
A square is 1.0 m on a side. Charges of +4.0 C are placed in two diagonally opposite corners. In the other two corners are placed charges of +3.0 C and -3.0 C. What is the absolute potential in the
A car travels along a straight line at a constant speed of 51.5 mi/h for a distance d and then another distance d in the same direction at another constant speed. The average velocity for the entir
An electron is released from rest in a uniform electric field and accelerates to the north at a rate of 139 m/s^2 What is the magnitude of the electric field? What is the direction of the electric fie
A 6.9nC charge is located 1.7m from a 3.8nC charge. Find the magnitude of the electrostatic force that one charge exerts on the other and is the force attractive or repulsive? Please show work.
You are driving through town at 12 when suddenly a car backs out of a driveway in front of you. You apply the brakes and begin decelerating at 3.3 . (a) How much time does it take to stop?
Water flows at a rate of 25 L/min through a horizontal 7.0-centimeter-diameter pipe under a pressure of 6.0 Pa. At one point, calcium deposits reduce the cross-sectional area of the pipe to 30 cm^2.
Point charges of 7.50 are situated at each of three corners of a square whose side is 0.500 . What is the magnitude of the resultant force on a point charge of -1.50 if it is placed at the vacant corn
A source is generating circular waves on the surface of a lake. The waves have a wavelength of 14.9m and travel outward at a speed of 6.73m/s. You are in a boat whose speed is 4.38m/s and heading di
An astronaut floating in space is separated from his ship. his mass is 85.0kg and he is 10.0m for his ship. he throws a wrench mass is .800kg in opposite direction with a velocity of 20.0m/s. How lo
A 63.0-O resistor is connected in parallel with a 120.0-O resistor. This parallel group is connected in series with a 19.0-O resistor. The total combination is connected across a 15.0-V battery.
A bar of 24-karat (pure) gold is supposed to be completely solid. To check this, a scientist takes the bar into the lab. Using a scale, she finds that it has a weight of 9.8 N and an apparent weight
If the stick loses half of its angular velocity during the collision, what is the mass of the ball? What is the speed of the ball right after the collision?
Calculate the force (magnitude and direction) exerted on the particle by each of the three fields when it is (a) stationary, (b) moving along the +x axis at a speed of 345 m/s, and (c) moving along
A particle moves along the x axis. It is initially at the position 0.270 m, moving with velocity 0.140 m/s and acceleration 20.320 m/s2. Suppose it moves as a particle under constant acceleration fo
An irregularly shaped piece of metal has a weight of 0.882 N. It is suspended from a scale, which reads 0.735 N when the piece is submerged in water. What are the volume and density of the piece of
What is the rate of heat loss through a glass window 3.0 mm thick if the outside temperature is -20 degrees C and the inside temperature is 20 degrees C?
Determine the number of maxima on the screen within an interval -5.5mm <y < 5.5mm. Point y=0 corresponds to the center of the pattern.