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A 4.8 Hz wave with an amplitude of 12 cm and a wavelength of 27.0 cm travels along a stretched horizontal string.
(a) How far does a given peak on the wave travel in a time interval of 0.49 s?
m
(b) How far does a knot on the string travel in the same time interval?
Sodium light of wavelength 589nm falls on a diffraction grating and its first-order peak on a screen 60.0cm away falls 3.32cm from the central peak. How many lines per cm does the grating have
Suppose that, because of an aneurism, the cross-sectional area, A(1), of a normal portion of a blood vessel increases to a value A(2) = 1.7A(1).
a meter rule hangs motionless supported at 30cm mark. It has a 0.02kg mass hanging from the 0meter mark
A 10 m platform diver during his diving can increase his rotation rate from an initial rate of 1.1 rev/s to a maximum of 2.8 rev/s. what is his moment of inertia at his maximum rotation rate
a) At what angle (in degrees) should this strip be placed to yield an apparent focal spot size 2.5 mm x 1.5 mm. b) Using this size target, what angle is required to obtain a 2.5 mm x 2.5 mm apparent focal spot
A tall tree is growing across a river from you. You would like to know the distance between yourself and the tree,as well as its height, How far away is the tree
A 4.00-m length of light nylon cord is wound around a uniform cylindrical spool of radius 0.500 m and mass 1.00 kg. How much work has been done on the spool when it reaches an angular speed of 8.40 rad/s
A person, sitting on a stool rotating at a rate of 21 rpm, holds masses in each hand. When their arms are outstretched , the total rotational inertia of the system is 3.7 kg·m2. what is the new angular velocity of the system
At the equator the Earth's magnetic field has a direction horizontal with respect to the ground and toward the north with a magnitude of 5.0 x 10^-5 T. With what velocity (magnitude and direction) must an electron be fired
A rocket starts from rest and moves upward from the surface of the earth, What is the speed of the rocket when it is 340m above the surface of the earth
A tiger leaps horizontally from a 5.5 m high rock with a speed of 3.9 m/s. How far from the base of the rock will she land
A car is moving at a constant velocity for 3s until it is 3.0 m from a yellow light. It slows to a stop in 2.0s. It remains stopped for 50s and then speeds up for 2s.
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