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The ball is then released when the cord is horizontal. At the bottom of its path, the ball strikes a 3.00 kg steel block initially at rest on a frictionless surface. The collision is elastic. Find t
a galvanic cell made up of cobalt,copper and their M2+ ions has Ecell+o.62 V.if E of the cathode half cell is 0.34,what is the E of anode half cell?
A package of mass m is released from rest at a warehouse loadingdock and slides down a h = 2.8 mhigh frictionless chute to a waiting truck. Unfortunately, thetruck driver went on a break without hav
what is the kinetic energy as it leaves the ground? at its highest point, B) what fraction of the initial kinetic energy has been converted to potential energy?
An 8.4 g bullet leaves the muzzle of a rifle with a speed of 621.5 m/s2. what constant force is exerted on the bullet while it is traveling down the .6 meter length of the barrel of the rifle?
A diving board of length 3.00 is supported at a point 1.00 from the end, and a diver weighing 470 stands at the free end . The diving board is of uniform cross section and weighs 255. What is the m
Suppose that we suddenly discovered that all these years. How would that affect our estimate of the distance to the Andromeda Galaxy?
A baseball outfielder throws a 0.150 kg baseball at a speed of 45.0 m/s and an initial angle of 28.0°. What is the kinetic energy of the baseball at the highest point of its trajectory?
What is the total electric flux due to these two point charges through a spherical surface centered at the origin and with radius = 0.450
A speed skater moving across frictionless ice at 9.2 m/s hits a 5.0 m wide patch of rough ice. She slows steadily, then continues on at 5.0 m/s. What is her acceleration on the rough ice?
calculate the number of moles in a liquid sample of sodium that has a molar heat of fusion of 2.06 kj/mol given that the sample releases 41.4 kj when it freezes.
To create artificial gravity, the space station shown in the drawing is rotating at a rate of 1.00 rpm. The radii of the cylindrically shaped chambers have the ratio rA/rB = 4.10. Each chamber A sim
By sound waves to people sitting across the newsroom, 3.0 m from the newscaster. Who receives the news first? Take he speed of sound in air to be 343 m/s.
Phosphourus, P, is combined with chlorine, Cl2, to give a gaseous compound with the formula PCLx. If you start with 2.097g of P and isolate 9.298g of PCLx, what is the value of x?
A man racing his son has half the kinetic energy of the son, who has half the mass of the father. the man speeds up by 0.8 m/s and then has the same kinetic energy as the son. What were the original
An athlete at the gym holds a 2.0 kg steel ball in his hand. His arm is 70 cm long and has a mass of 4.0 kg. What is the magnitude of the torque about his shoulder if he holds his arm straight out
The difference in potential between the accelerating plates of a TV set is about 26000 V. If the distance between these plates is 1.50 cm, find the magnitude of the uniform electric field in this r
Calculate the pH of a solution resulting from the addition of 10.0mL of .10 M NaOH to 50.0 mL of .10M benzoic acid .
Two identical piano wires have a fundamental frequency of 600Hz when kept under the same tension. What fractional increase in the tension of one wire lead to the occurrence of 6 beats/s when both wi
On level ground a shell is fired with an initial velocity of 74.6 at 61.1 above the horizontal and feels no appreciable air resistance.At its highest point, find the horizontal and vertical compone
Find the number of revolutions of a bicycle wheel of diameter 0.7 m when the bike goes a distance of 22 m down the street.
The brochure advertising a sports car states that the car can be moving at 100.0 km/h, and stop in 37.19 meters. What is its average acceleration during a stop from that velocity? Express your answe
A 10 m long, 200g rod with uniform mass distribution is hinged at one end and connected to a wall. It is held horizontally, and then released. What is the speed of the tip of the rod as it hits the
A trapeze artist swings in simple harmonic motion with a period of 4.4s. The acceleration of gravity is 9.81 m/s2. Calculate the length of the calbes supporting the trapeze.
the boiling temperture of water decreases by about 3c each for 1000 m rise in altitude. What is the decrease in the boiling temperture in K, F, and R for for 1000 m rise in altitude ?