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The equilibrium length of a certain spring with a force of constant k=250 N/m is 0.18 meter.
(a) Find the magnitude of the force that is required to hold this spring at twice the equilibrium length?
(b) Is the magnitude of the force required to keep the spring compressed to half its equilibrium length greater then, less than or equal to the force found in part (a).
The aorta carries blood away from the heart at a speed of about 39 cm/s and has a radius of approximately 1.0 cm. The aorta branches eventually into a large number of tiny capillaries that distribute the blood to the various body organs.
A laser pulse has an energy of 16 J and a beam radius of 2 mm. The pulse duration is 13 ns and the energy density is constant within the pulse. What is the total energy density within the pulse
At the top of Earth's atmosphere, sunlight has an average intensity of 1350W/m^2. If the average distance from Earth to the Sun is 1.50x10^11m, at what rate does the Sun radiate energy?
A photon of energy 50 MeV moves along the x-axis and Comptonscatters with an electron initially at rest. After the collision the resulting photon is observed traveling along the y-axis and the electronhas recoiled.
A large storage tank, open to the atmosphere at the top and filled with water, develops a small hole in its side at a point 29.0 m below the water level. Determine the speed at which the water leaves the hole
A ball rotates in a circle of radius 20.0 cm, making one complete revolution every 2.00 s. What are (a) the speed of the ball, (b) the frequency of motion in hertz, and (c) the angular speed of the ball?
The outside mirror on the passenger side of a car is convex and has a focal length of -7.7 m. Relative to this mirror, Find the image distance of the truck.
The attractive electrostatic force between the point charges 7.35x10^-6C and Q has a magnitude of 0.400N when the separation between the charges is 2.92m. Find the sign and magnitude of the charge Q.
A block of mass m = 4 kg slides back and forth on a frictionless horizontal track. It is attached to a spring with a relaxed length of L = 4 m, By what length is the spring extended
the cable on an elevator of mass m snaps and two safety mechanisms come into play. emergency brakes apply a constant
A golf ball of mass 50 g released from a height 1.5m above a concrete floor bounces back to a height of 1.0 m. What is the amount of energy lost during the impact
what is the net effect of aerosols on climate? answer must be 400-500 words and fully
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