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A red laser from the physics lab is marked as producing 632.8-nm light. When light from this laser falls on two closely spaced slits, an interference pattern formed on a wall several meters away has bright red fringes spaced5.00mm apart near the center of the pattern. When the laser is replaced by a small laser pointer, the fringes are 5.19mm apart.
What is the wavelength of light produced by the pointer?
An Australian emu is running due east in a straight line at a speed of 17.5 m/s and slows down to a speed of 12.2 m/s in 4.1 s. (a) What is the direction of the bird's acceleration? (b) Assuming that the acceleration remains the same, what is the ..
find out the magnitude of the gravitational force exerted.
A curve of radius 65 m is banked for a design speed of 100 km/h. If the coefficient of static friction is 0.30 (wet pavement), at what range of speeds can a car safely make the curve
Two small charges with a mass of 1.0 g each are connected by 2.0-cm-long insulating rod of negligible mass. What is the dipole moment of the rod?
A research submarine has a 40.0cm -diameter window 8.30cm thick. The manufacturer says the window can withstand forces up to 1.10×106N
A baseball is thrown at an angle of 27 degrees relative to the ground at a speed of 20.9m/s. The ball is caught 36.0231m from the thrower. The acceleration due to gravity is 9.81m/s square. Explain how long is it in the air ?
A mass of 125g is suspended from a spring of a spring constant of 38N/m. When this mass is pulled down 3mm and set in oscillation, what is the period and frequency of the oscillation? How different would be both, the period and frequency, if the m..
A 0.5970-kg ice cube at -12.40°C is placed inside a chamber of steam at 365.0°C. Later, you notice that the ice cube has completely melted into a puddle of water, calculate the final temperature of the puddle once it settled to equilibrium
If the 800-g car runs into a stationary 300-g car at the bottom of the ramp what is the velocity of the two cars after an inelastic collision?
Megan's mass is 28kg. She climbs the 4.8m ladder of a slide and reaches a velocity of 3.2m/s at the bottom of the slide. How much work was done by friction on Megan? Assume that air resistance is negligible.
A charge of -3.9 micro-coulombs is launched from the positive plate of a large capacitor to the negative plate.
A group of explorers in Antarctica can obtain water only by melting ice. They wish to make 4 cups of coffee, determine the amount of heat required and the amount of power required
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