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Q1. A small statue in the shape of a falcon is painted black and has a weight of 24.1 N. The owner of the statue claims it is made of solid gold. What time the statue is completely submerged in a container brimful of water, the weight of the water that spills over the top and into a bucket is 1.25 N. Find the density of metal. Is the density consistent with the claim that the falcon is solid gold?
Q2. A 55.0 kg girl weighs herself by standing on a scale in an elevator.
a)What is the force exerted by the scale when the elevator is descending at the constant speed of 10 m/s?
b)What is the force exerted by the scale if an elevator is accelerating downward with an acceleration of 2.7 m/s2
c)If the elevator's descending speed is measured at 10 m/s at a given point, but its speed is decreasing by 2.7 m/s2, what is a force exerted by the scale?
A proton travels with the speed of 8.34×105 m/s at an angle of 32.3° with the direction of a magnetic field. The field exerts a force of 3.00×10-17 N on the proton. What is the strength of the field.
What is moment of inertia
A 3.60-{rm m}-long, 430 {rm kg} steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. A 66.0 {rm kg} construction worker stands at the far end of the beam. What is the magnitude..
Find the coefficient of friction between crate and floor
Write a general expression of the flux
A train at rest emits a sound at a frequency of 1045 Hz. An observer in a car travels away from the sound source at a speed of 37 m/s. What is the frequency heard by the observer? Imagine the speed of sound in air to be 340 m/s.
Work out the buoyant force due to the surrounding air on a man weighing 800 {rm N}. Imagine his average density is the same as that of water, and surrounding air temperature is 0 rm ^circ C.
In a diesel engine, the piston compresses air at 302 K to a volume that is 0.0612 of the original volume and the pressure that is 46 times the original pressure. What is the temperature of the air after the compression.
An oil drop whose mass is determined to be 3.3x10^-15 is held at rest between two large plates separated by 1cm while the potential difference between them is 340 V. How numerous excess electrons does this have here.
A pilot flies an airplane at a constant speed of 520 km/hr in the vertical circle of radius 1400 m. compute the force exerted by the seat on the 105-kg pilot at point A and at point B.
What is magnitude of the angular momentum
Compute the semi major axis of the star orbit
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