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A certain transverse wave is described by y(x, t) = (4.17 mm) cos 2π[x/(30.8 cm) - t/(0.0400 s)]. Determine the wave's velocity of propagation (indicate direction with the sign).
a patient has a far point of 29.2 cm and a near point of 24.2 cm. what power in diopters should be prescribed to
The length of a cord increases 10.0% when 150.0kg is suspended from it. If the original length of the cord is 6.6 m and its diameter is 0.75 cm, what is the Young Modulus for the cord?
A spring with a constant of 32N/m is placed on a horizontal smooth surface and a mass of 2.3 kg is pushed against it. What is the velocity of the mass as it leaves contact witht he spring
A car is moving in a circular path. At a certain instant, it has zero tangential acceleration and a non-zero centripetal acceleration
A model rocket is constructed with a motor that can provide atotal impulse of 21.0 N·s. The mass of the rocket is 0.243kg. What is the speed that this rocket achieves when it is launchedfrom rest? Neglect the effects of gravity and air resistance.
consider the following.a calculate the angular momentum of earth that arises from its spinning motion on its axis
How many subjects were assigned to each of the treatments, and was randomization used? Was it a double-blind experiment? What were the conclusions, and were the results statistically significant?
a 106 kg man is traveling through the snow. he finds that when he wears only his boots the sole of each of which has an
it has been said that it is better to lift a weight with your legs instead of with your back. which method of lifting
a standing wave is established in a 89 cm long string fixed at both ends. the string vibrates in 6 segments when driven
A person pulls a 30kg crate to the right along a rough horizontal surface. He pulls with a force of 200N at an angle of 25 degrees from the horizontal. find the total force on the crate
A current of 6.0 A is drawn from the battery in the figure shown below. How much is the voltage of the battery Vab in V
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