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Physics
Physics
High School
water is pumped at a rate of 32 m3 /s from the reservoir and out through the pipe, which has a diameter of 1.50 m. what power must be supplied to the water to effect this discharge?
Physics
High School
How will you describe the different regions of EM spectrum?
Physics
High School
A pinball i launch at (ma=0. 1kg )to launched at 12. 6 m/. People compre the pinball machine pring by 0. 2m to reach thie initial velocity for the pinball. Which type if pring do you chooe to mot cloely reach the targeted launch peed of 12. 6m/?
Physics
High School
the coefficient of kinetic friction between the block and the table is 0.320. find the distance d from the box to the edge of the table if it takes 1.5 s for the box to reach the edge once it begins to move.
Physics
High School
100 POINTS FOR HELPA chef needs to increase the temperature of a food dish. She thinks she can do this by stacking another dish on top of it. She has three dishes to choose from for the top dish: A, B, and C.Which one of these dishes would make the food dish the warmest when placed on top of it? As part of your answer, explain how the energy and temperature of both the top dish and the food dish will change when the food dish warms up, and why.
Physics
High School
Ocean waves crash on the beach at a velocity of 3. 5 m/s. If the distance between the crests of each wave is 4 m, find the frequency of the waves.
Physics
High School
What is the frequency of a wave if its time period is 0.05 s?
Physics
College
in 1990 walter arfeuille of belgium lifted a 281.5-kg object through a distance of 17.1 cm using only his teeth.
Physics
College
Youre an astronaut in the first crew of a new space station. The station is shaped like a wheel 22 m in diameter, with essentially all its 5.0105 kg mass at the rim. When the crew arrives, it will be set rotating at a rate that requires an object at the rim to have radial acceleration g, thereby simulating Earths surface gravity. This will be accomplished using two small rockets, each with 100 N thrust, mounted onthe stations rim. Determine how long to fire the rockets.
Physics
High School
Calculate the speed of a horse that travels 512 m in 450 seconds.
Physics
High School
a spring stretches by 21.0 cm when a 135 n object is attached. what is the weight of a fish that would stretch the spring by 31.0 cm?
Physics
College
The geocentric model could not explain which of the following observations made by early astronomers? Select the two correct answersMars and Jupiter appeared to move backwards for some period of timeThe planets had epicyclesThe stars appeared to moveMercury and Venus changed in appearance throughout the year
Physics
High School
you are lying on your back on the slope of a grassy hill, watching the clouds go by overhead. which is the best statement about the force of friction exerted on you by the ground in this situation?
Physics
High School
In a two-slit interference pattern, the intensity at the peak of the central maximum is I_0.a. At a point in the pattern where the phase difference between the waves from the two slits is 62.0 degrees, what is the intensity? Give your answer as a fraction of I_0. (I/I_0 =)b. What is the path difference for light with a wavelength of 473 nm from the two slits at a point where the phase angle is 62.0 degrees?
Physics
High School
what is the total number of unique ways to distribute two identical objects in three separate containers when there is no limit on the number of objects that can be in a container?
Physics
High School
Kara less was applying her makeup when she drove into south's busy parking lot last friday morning. Unaware that lisa ford was stopped in her lane 30 feet ahead, kara rear-ended lisa's rented taurus. Kara's 1300-kg car was moving at 11 m/s and stopped in 0. 14 seconds.
Physics
High School
the range of visible light wavelengths is between 3.9 x 10 -7 m and 7.0 x 10 -7 m. what is the corresponding range of frequencies for visible light?
Physics
High School
A piece of clay was thrown so that it has a momentum of 34 kgm/s. It hits a 0.25 kg motionless cart and sticks to it. What is the momentum of the clay and cart combined? (ignore friction)
Physics
High School
radio waves travel at a speed of 1.7x10^8 m/s through ice. A radio wave pulse sent into antarctic ice reflects off earth at the bottom and returns to the surface in 32.9x10^-6 s. how deep is the ice?
Physics
College
Which method of heat transfer warms the air just above hot sand on a beach? Convection, because heat is transferred through the solid sand Conduction, because the air particles in contact with hot sand move faster Conduction, because the heat moves with the help of electromagnetic waves Convection, because the air particles transfer heat in the absence of a medium
Physics
High School
What is the change in internal energy AU for a reaction that gives off 65 J of heat and does 38 J of work?
Physics
High School
1. suppose a spaceship which is traveling at c/2 passes a light source. what is the velocity of light from the source in the reference frame of the spaceship?
Physics
High School
while on mars, you drop your martian detector while climbing out of the rover. if you're standing on a platform 8 meters from the ground and the acceleration due to gravity on mars is -3.8 m/s^2, how long does it take for the martian detector to hit the ground? report an error 1.3 s 9.9 s 2.1 s 13 s 21 s
Physics
College
two photons have the same wavelength. they also have the same question 30 options: frequency. energy. both of these. neither of these.
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