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Astronauts in space cannot weight themselves by standing on a bathroom scale. What is her mass if the spring's constant is 240N/m?
What is the frequency of the EM wave emitted most strongly be a glowing element on a stove with temperature 1,800 K?
An 87 kg man drops from rest on a diving board -2.8 m above the surface of the water and comes to rest 0.58 s after reaching the water. The acceleration due to gravity is 9.81 m/s^2. What force doe
What is the wavelength of the peak of the blackbody radiation curve for the human body (T=310K)? What type of EM wave is this?
List the quantum numbers of all occupied states if (a) the particles are electrons and (b) the particles have the same mass as the electron but do not obey the exclusion principle.
A steel cable with a total length 30m and mass 100kg is connected to two poles. The tension in the cable is 3,000N, and the wind makes the cable vibrate with the frequency of 2 Hz. Calculate the wa
Scientists are working on a new technique to kill cancer cells by zapping them with ultrahigh-energy. How much energy is given to the cell during this pulse?
A staging that weighs Wstaging supports a painter weighing 680 N. The reading on the left scale is 740 N and the reading on the right scale is 440 N. What is the weight of the staging?
The highest musical note on a piano has a frequency of 4,186Hz. Why would a tape of piano music sound terrible if played on a tape player that reproduces frequencies only up to 5,000Hz?
At a moment when the rod's speed is 7 m/s, approximately how many excess electrons are at the negative end of the rod?
A 500 g rubber ball is dropped from a height of 10 m and undergoes a perfectly elastic collision with the earth. What is the earth's velocity after the collision?
A 30-06 caliber hunting rifle fires a bullet of mass 0.0152 kg with a velocity of 247 m/s to the right. The rifle has a mass of 3.2 kg. What is the recoil speed of the rifle as the bullet leaves th
You are to program a robotic arm on an assembly line to move in the xy-plane. Its first displacement is ; its second displacement is , of magnitude 6.41 and direction 62.5 measured in the sense fro
Two positive point charges are held in place, 0.72 m apart. They are then moved so that their electric potential energy doubles. What is the new separation between the charges?
How does this number of calories compare with the number of calories required to change the same gram of 100 degree C boiling water to 100 degree C steam?
A Carnot engine performs work at the rate of 430 kW while using 710 kcal of heat per second. If the temperature of the heat source is 590°C, at what temperature is the waste heat exhausted?
Ricardo notices that the canoe moved 45 cm relative to a submerged log during the exchange and calculates Carmelita's mass, which she has not told him. What is it?
If the diameter of a red blood cell is 6.00 µm, determine the maximum emf that can be generated around the perimeter of a cell in this field.
He is sitting on a set of bathroom scales. He notes that the scales show four times his normal weight. What is the radius of the loop, in meters?
River Pascal with a volume flow rate of 3.0*105 joins with River Archimedes, which carries 1.05×106 , to form the Bernoulli River. The Bernoulli River is 120 wide and 10 deep. What is the spe
When the pool is filled to a depth of 1.50 m with fresh water, what is the force caused by the water on the ends (32m)? on the sides (8m)?
A 14 g bullet traveling at 248 m/s is fired into a 0.489 kg wooden block anchored to a 100 N/m spring. How far is the spring compressed to the nearest thousandth of a meter?
Determine the resolution limit set by diffraction for and . Specify as the number of lines per millimeter resolved on the film.
If the distance between the first and third minima in the diffraction pattern is 2.80 mm, what is the width of the slit?