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A beam of hydrogen molecules (H2) is directed toward a wall, at an angle of 38° with the normal to the wall. Each molecule in the beam has a speed of 2.9 km/s and a mass of 3.3 x 10-24 g. The beam strikes the wall over an area of 4.1 cm2, at the rate of 1021 molecules per second. What is the beam's pressure on the wall?
Two motorcycles are traveling in opposite directions at the same speed when one of the cyclists blasts his horn, what is the speed of the motorcycles
The temperature of 1.3 kg of water is 34° C. To cool the water, ice at 0° C is added to it. The desired final temperature of the water is 11° C. determine how much mass m of ice should be added
Consider two masses (M=50 kg, m = 10 kg) connected by a string as shown below. Find the tension in the connecting string
Two co-centric hollow spheres have radii of R1 and R2 and have uniform surface charge densities s1 and s2. The two charge densities are positive. Derive an expression for the electric field
tennis ball of mass 0.4Kg rebounds from a tennis racquet. What was the force experienced by the tennis racquet during it's time in contact with the ball
a flat mirror and a wall meet at a 45 degree angle. light strikes the mirror 10 meters from the corner at an angle of incidence of 45 degrees
A small mass m1 = 0.001 kg initially moving with speed v1 = 2001 m/s collides with and sticks to a larger mass m2 = 1.000 kg initially at rest. State the law of the conservation of momentum
Bob has just finished climbing a sheer cliff above a beach, and wants to figure out how high he climbed. All he has to use, however, is a baseball, a stopwatch, and a friend on the ground below with a long measuring tape. Bob is a pitcher, and kno..
Determine the number of moles of air that leave the house during the daytime.
A 25 g glass tumbler contains 450 mL of water at 24°C. what is the final temperature of the drink
Suppose one gallon of gasoline produces 1.1 multiplied by 108 J of energy, and this energy is enough to operate a particular car for 26 miles.
If the value of the linear charge density is ? = 40.5 ?C/m and the distance between the two cables is D = 40.5 m, calculate the electric field midway between the two cables
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