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A bird watcher meanders through the woods, walking 0.30 kilometer due east, 0.80 kilometer due south, and 2.60 kilometer in a direction 33 degree north of west. The time required for this trip is 2.50 hour.
(a) Find the magnitude and direction of bird watcher displacement. Use kilometers and hours for distance and time, correspondingly.
(b) Find the magnitude and direction of the bird watcher average velocity.
in a diagnostic x-ray procedure 5x10^10 photons are absorbed by tissue with a mass of .6 kg. What is the equivalent radiation dose in mrem
Monochromatic light from a distant source is incident on a slit 0.750 {rm mm} wide. On a screen 2.00 {rm m} away, the distance from the central maximum of the diffraction pattern to the first least amount is measured to be 1.35 {rm mm}.
calculate the wavelength of matter waves associated with a bullet of 20.0 grams fired at 100. meters per second.x 10
An object is launched vertically from near the surface of the Earth at at velocity of 100.0 m/s, What is its acceleration at its maximum height
light with a frequency of 2 x 1015 hz shines on a copper surface 4.70 ev. what is the maximum kinetic energy of the
a pipe has a pressure of 2.00 x 105 pa at point a where the cross-sectional area is 0.100 m2. the speed of the water in
A sound wave of velocity 330 m/s and wavelength 0.70 m is produced for 0.50 s. What is the frequency of the wave? How many complete waves are emitted in this time interval? After 0.50 s, how far is the front of the wave from the source of the sound?
a small object of mass 3.46 g and charge -18.4 oc is suspended motionless above the ground when immersed in a uniform
A ceiling fan is turned on and a net torque of 1.6 N·m applied to the blades. What is the angular acceleration of the blades
(a) If the elevator moves with an upward acceleration a with arrow of magnitude 2.0 m/s2, find the tensions T1 and T2 in the upper and lower strings. T1 = N T2 = N
A 85.5-kg horizontal circular platform rotates freely with no friction about its center at an initial angular velocity of 1.59 rad/s. Find the angular velocity of the platform with its load
Four point charges are positioned on the rim of a circle. The charge on each of the four is +0.5 µC, +1.5 µC, -1.0 µC, and -0.5 µC, determine the total electric potential at the center due to the four charges
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