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a sewing machine needle moves up and down in simple harmonic motion with an amplitude of 1.27cm and a frequency of 2.55Hz. What is the maximum speed of the needle and what is the maximum acceleration of the needle?
when we charge any capacitor by applying a battery to a certain voltage, how the energy decreases and why
How high will a 0.32kg rock go if thrown straight up by someone who does 119J of work on it? Avoid air resistance.
A certain mass oscillates without friction on the end of a horizontal spring. At time t= 1.20 s, the mass is at position x= 0.120m (measured from the equilibrium location), has velocity of v= 14.5m/s, and is accelerating at a = -98.0m/s^2
Both spacecraft are initially at rest. Explain how far does the starship move as it pulls the shuttlecraft aboard?
The power crossing a surface perpendicular is equal to the intensity at the surface times the area of the surface. Since the source emits uniformly in all directions, the light intensity is the same at all points on the imaginary spherical surface..
A tennis player receives a shot with the ball ( 0.0600kg) traveling horizontally at 50.0 m/s, what is the impulse delivered to the ball by the racket
While hauling a log in the back of a flatbed truck, you are pulled over by the state police, The log has a mass of m = 844 kg; the truck has a mass of M = 9750 kg. According to the truck manufacturer, Calculate the minimum coefficient of static frict..
A girl delivering newspapers covers her route by traveling 10.00 blocks west, 4.00 blocks north, and then 2.00 blocks east. What is the total distance she travels
electric companies supply the area homes with 1 kiolwatt of power for one hour for an average cost of 8.5 cents. a
A length of aluminum wire has a resistance of 14.0 ? at 22.0°C. When the wire is warmed in an oven and reaches thermal equilibrium, Neglecting thermal expansion, find the temperature of the oven
The work function for platinum is 6.35 eV. Convert the value of the work function from electron volts to joules. Find the cutoff frequency for platinum.
An object glides on a horizontal tabletop with a coefficient of kinetic friction of 0.45. If its initial velocity is 5.5 m/s, how long does it take for the object to come to rest
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