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Assuming that the sun radiates evenly in all directions, estimate the diameter of the sun. Ignore effects of reflection and refraction due to earth's atmosphere.
In lab test on a 9.25cm cube of a certain material, a force of 1375 N at 8.50 degree to the cube (is in the bottom of the box at the left with the angle and the same in the top at the right ) causes
A pot of hot water is boiling on your stove. The pot is in the shape of a round cylinder made of aluminum which is 10 cm in radius. The aluminum is 3 mm thick. You notice that after 10 minutes, 0.1
a) What torque does the machinist exert about the center of the nut? b) what is the maximum torque he could exert with this force, and how should the force be oriented?
Calculate the total kinetic energy before and after the collision
Suddenly it is truck by 3.00kg stone traveling horizontally at 8.0m/s to the right, whereupon the stone rebounds at 2.00m/s horizontally to the left. Find the maximum distance that the block will co
What kind of collision took place between bullet and the block? Explain your anweer comparing the values of the kinetic energy before and after the collision
A 0.45 F parallel- plate capacitor is connected to a 6V battery. (a) how much is the charge on the plates? (b) what is the energy stored in the capacitor? (c) if the area of the plates doubles and
What is the composition, in atom percent, of an alloy that consists of a) 91.5 wt% Ag and b) 8.5 wt% Cu? Assume that the atomic weights for silver and copper are, respectively, 107.87 and 63.55 g/m
(a) if the charged particle is 3 cm away, calculate both the potential and kinetic energies of the bead. (b) what would be the closest distance the bead would be from the point charge? (HINT for B:
Find the change in kinetic energy of the system of two vehicles for the situations of part (a) and part (b). For which situation is the changein kinetic energy grater in magnitude?
What is the initial velocity of the cork, as seen by an observer on the ground? in the x and y direction
The energy for vacancy formation is 0.82 eV/atom, while the density and atomic weight for this metal are 6.94 g/cm3 and 93.07 g/mol, respectively.
The next golfer in the group hits a ball with the same initial speed but at an angle above the horizontal that is greater than 45.0°. If the second ball travels the same horizontal distance as t
When the dried up seed pod of a scotch broom plant bursts open, it shoots out a seed with an initial velocity of 2.4 m/s at an angle of 60.0° above the horizontal. (a) If the seed pod is 1.2 m a
On a hot summer day a young girl swings on a rope above the local swimming hole. When she lets go of the rope her initial velocity is 2.65 m/s at an angle of 35.0° above the horizontal. If she
The next golfer in the group hits a ball with the same initial speed but at an angle above the horizontal that is greater than 45 degrees. If the second ball travels the same horizontal distance as
A 38cm -tall, 5.0cm -diameter cylindrical beaker is filled to its brim with water. What is the downward force of the water on the bottom of the beaker?
How much net work out per kg of total steam flow is done by the system? what is the thermal efficiency of the olant ? f)what is the mass flow rate required fora power output of 100 mw?
Find a) that is the temp and pressure for state 2 of process? b)what is the heat in and heat out per kg? c)what is the temp of state 3&state 4? d)find the thermal efficiency of cycle? f)sketch t
a) What is the velocity of the 3170 kg car before the collision? Answer in units of m/s b) What is the decrease in kinetic energy during the collision?
To overcome this diffuculty, he throws his 2.6 kg physics textbook horizontally toward the north shore at a speed of 6.7 m/s. The acceleration of gravity is 9.81 m/s^2 How long does it take him to r
The clarinet is well modeled as a cylindrical pipe that is open at one end and closed at the other. Find the wavelength and frequency of the third normal mode of vibration of a clarinet's air column
Then you vibrate the string transversely at precisely the frequency that corresponds to its fourth normal mode, that is, at its fourth harmonic. What is the wavelength of the standing wave you creat