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Standing on a roof on July 4, you view a burst of distant fireworks. You hear the explosion 6.95 s later. Determine how far (in km) are you from the point of the explosion? Suppose that the temperat
An athlete of 75 kg does a single-hand handstand. When the area of the hand in contact with the floor is 125 cm2, determine what pressure is applied on the floor?
(i) Write down an expression for the heat Q required to melt a mass m of water. (ii) If a nucleus disintegrates through alpha decay, then how the released energy is associated to the reduction in ma
When speed of wind at a particular place is measured to be 8 meters per second at a height of 2 meters, then what would be the expected wind speed is at a height of around 10 meters?
A lab notebook sits on the table 0.75 m above the floor. Your lab partner tells you the book consists of zero potential energy and the other student says it consists of 8.0 J of potential energy. Wh
A recent wind farm project in Idaho employs 7 turbines of 1.5 MW rating; 28 million kWh per year is anticipated from this site. Find out the capacity factor for this project (that is, energy output
For a place near Norfolk, Virginia at an unspecified time, determine the probability which the wind speed will be more than 9 meters per second? Employ the Weibull Probability Distribution with valu
Describe why power lines exterior of cities are run at high voltage in terms of voltages, currents, resistance, power transmission, and/or power loss. Describe in 100 words or less.
Transverse waves travel with the speed of 20m/s in a string beneath a tension of 6N. What tension is needed to generate a wave speed of 30m/s in the similar string?
A tuning fork of 440Hz is held above a closed pipe. Determine the spacing between the resonances if the air temperature is 20 degrees C. Compare this spacing to the spacing generated on an open pipe
A piece of string of 5.3M long consists of a mass of 15g. What should the tension in the string be to make, in a 125HZ wave, a wavelength 120cm long?
Determine the minimum thickness of the glycerin film (n = 1.47) on which light of wavelength 650 nm shines which results in constructive interference of the reflected light? Suppose the film is surr
An object positioned 14 cm from a concave mirror generates a real image 8.0 cm from the mirror. When the object is now moved to a new position 18.0 cm from the mirror, where is the new image positio
Determine the ratio of the amplitudes of the two waves? When first wave hits a boundary among the two mediums travel at 10 Km/sec at an angle of incidence of 40 degrees, causing an angle of refracti
A pendulum makes 40 vibrations in 45 seconds. Compute its period and its frequency and find out its maximum speed when the cord is 1.5m long and it forms an angle of 15 degrees with its rest positi
Find out the shortest length of an open pipe which will resonate at 0 degrees C having a fork of frequency 160 cy/sec. Determine the frequency of the sound overtone when the temperature rises by 10
A glass block, for which n =1.52, consists of a blemish situated 4.5 cm from one surface. At what distance from the surface does the image of the blemish come into view to the outside observer?
A solid glass sphere having a radius of 6.00 cm and index of refraction of 1.50 consists of a small coin embedded 3.00 cm from the front surface of the sphere. For the viewer looking at the coin via
A long flexible cable of 100M weighing 16N is stretched among the two poles having a force of 450N. When the cable is struck at one end, compute the speed of the wave created.
At 2.00 x 10^2 nF capacitor consists of a 4.0 x 10^1 microC charge. i) Determine the potential difference among the plates?
The speed of light is around 3x10^8 m/s and the permeability of free space is around 4π x 10^-7 T M/A. Determine the rms value of the electric field in kV/m and rms value of the magnetic field in m
A pendulum bob of 2.15 kg on a string 1.50 m long, is free having a velocity of 3.75 m/s if the support string makes an angle of 37.5* with the vertical. Determine the velocity of the bob at the bo
A ski lift carries passengers up 165 m high slope at the rate of one chair each and every 33.5 second. When the chair will hold two passengers having a net mass of 186 kg, determine the power of the
A satellite of 4500 kg is orbiting the earth in the circular path. The height of satellite above the surface of the earth is around 750 km. Compute the time it takes for the satellite to travel arou
A mass of 5.15 kg is moving in the circular path of radius 4.35 m having a constant angular velocity of 5.13 rad/sec. Determine the centripetal force on the mass?