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A 125 g weight is hung from a spring with a spring constant of 25 N/m. The position of the mass is measured from the equilibrium point. The mass is pulled down 15 centimeter and released at t=0. The position of the mass is given by x (t) = xo cos (wt = theta o)
Find what are the values of all the constants in this equation?
Calculate the maximum energy of the mass?
Find at what time will the position be 5.0 centimeter? Memorize to do dimensions check and limiting cases.
A block of ice of mass 0.8 kg and initial temperature T = 0 C is placed in a sealed insulated container full of Helium gas, What is the mass of the liquid water
An AC source operating at 60 Hz with a maximum voltage of169 V is connected in series with aresistor (R = 1.4 k) and acapacitor (C = 2.5 µF). What is the maximum value of the current in the circuit? What are the maximum values of the potential diff..
An automobile has a vertical radio antenna 1.1m long. Theautomobile travels at 79.4 km/h on a horizontal road where Earth'smagnetic field is 58.5 μT directed toward the north and downward at an angle of 46.9o below the horizontal.
a 1.5 kg ball falls onto a floor. just before it strikes the floor its velocity is 12 m/s. the ball bounces up with a velocity of 10 m/s. find the impulse on the ball
A 3.04 μF capacitor and a 7.84 μF capacitor are connected in series across a 17.0 V battery. What voltage would be required to charge a parallel combination of the same two capacitors to the same total energy?
Kenny throws a basketball which has an initial speed v0. When the ball gets to its minimum speed sometime before striking the ground, What was the initial angle of the ball
A child is in danger of drowning in the Merimac river. The Merimac river has a current of 3.1 km/hr to the east, How far from the dock does the boat reach the child
a 2.1-m-long vertical pole extends from the bottom of a swimming pool to a point 50.0 cm above the water. What is the length in meters of the shadow of the pole on the level bottom of the pool
A 87 g arrow is fired from a bow whose string exerts an average force of 105 N on the arrow over a distance of 76 cm. Illustrate what is the speed of the arrow as it leaves the bow?
Suppose that a small incandescent light bulb (R=2.88 kilo ohms) is connected to a standard European household AC electrical socket, Find the average power dissipated by the light bulb
A plastic bag is filled with helium at atmospheric pressure and 18.0 oC. Assume that the mass of the bag is negligible, what is the required volume of the balloon if the air inside can be maintained at 39.0 oC
How does hydrogen bonding affect large molecules like proteins? What shapes do proteins take because of this effect?
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