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A person is standing in an elevator that is stationary. The scale reads 600N The elevator starts moving upward. What is the persons weight when the velocity of the elevator is 3 m/s upward and the acceleration upward is 2 m/s^2
What is the weight of the person when the velocity is 3 m/s upward and the acceleration is 2 m/s^2 downward?
A tank having a volume of 0.10 m3 contains helium gas at 155 atm. How many balloons can the tank blow up if each filled balloon is a sphere 0.30 -m in diameter at an absolute pressure of 1.3 atm.
Estimate the shear stress if this force is ex- erted on a 0.412 cm -thick pine board that is 13.7 cm wide
A guitar string with a mass of 12 g is 80 cm long and attached to the guitar at two points separated by 65 cm. What is the frequency of its fundamental note when it is placed under a tension of 170 N? Answer A) 74 Hz B) 82 Hz C) 93 Hz D) 150 Hz E)..
A 2.50 syringe has an inner diameter of 4 , a needle inner diameter of 0.24 , and a plunger pad diameter (where you place your finger) of 1.2 cm. A nurse uses syringe to inject medicine into a patient whose blood pressure is 140/100.
When she stands 3.5m from you, what is the height of her image formed on the retina of your eye, What is the height of her image when she is 4.5 m from you
At t = 0 a grinding wheel has an angular velocity of 21.00 rad/s. It has a constant angular acceleration of 21 rad/s^2 until a circuit breaker trips at 2.40s. From then on it turns during 344 rad as it coasts to a stop at constant acceleration.
A person looks horizontally at the edge of a swimming pool. If its length is 5.00m, and the pool is filled to the surface, to what depth (in m) could observer see? For water is 1.33).
A battery produces 41.4 V when 7.40 A is drawn from it and 46.2 V when 2.20 A is drawn, What is the internal resistance of the battery
Figure the y-component of the magnetic force acting on a segment of wire of length L = 21.0 cm
Recall from Section 14.3 that the average kinetic energy of an atom in a monatomic ideal gas is given by KE=(3/2)kT, Determine the de Broglie wavelength of a helium atom
A 13.30 kg crate is pulled by an 181N force (parallel to the incline) up a rough incline. Assume that the incline makes an angle of 31.80° with the horizontal and that the coefficient of kinetic friction is 0.436.
A vessel whose walls are thermally insulated contains 2.10 of water and 0.450 of ice, all at the temperature of 0 . The outlet of a tube leading from a boiler in which water is boiling at atmospheric pressure is inserted into the water.
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