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Physics
Physics
High School
A 512 Hz tuning fork was sounded at the same time as another tuning fork which has been damaged. Over the course of 10 seconds, 30 beats were heard. What are the possible frequencies of the second fork?
Physics
High School
Need help asap! Im unsure of how to do this!
Physics
High School
if there is another objective that can be used, having magnification of -400, what other total magnification is possible?
Physics
High School
a hockey puck is accelerated using a hockey stick over a smooth level ice surface the puck has a mass of 0.400kg and is moved by the stick for a distance of 0.800m what was the average forcr applied to the puck if the final speed is 25.0m/s
Physics
High School
the waves represented by the data pass by the buoy with a speed of 5 m/s. what is the wavelength of these waves?
Physics
High School
600 joules of heat is absorbed by a system that does 200 j of work on its surroundings. 1) what is the change in the internal energy of the system? (express your answer to one significant figure.)
Physics
High School
you are pulling a child in a wagon. the rope handle is inclined upward at a 60 angle. the tension in the handle is 20 n.
Physics
High School
A galaxy with thin spiral arms and a small spherical central bulge would be a type?a. Sab. SBac. Scd. SBce. S0
Physics
High School
how fast would a(n) 80 kg man need to run in order to have the same kinetic energy as an 8.0 g bullet fired at 380 m/s ?
Physics
High School
what mass of 23592u must undergo fission to operate a 1000-mw power plant for one day if the conversion efficiency is 31 %?
Physics
High School
if a sound has an intensity 100 times the intensity if a softer sound, how much larger on the decibel scale is the loudness level of the more intense sound?
Physics
High School
Why does sleep help injuries?
Physics
High School
b) given the mass of the rubber in the balloon is 1.80 grams, what is the net vertical force on the balloon if it is let go? consider the buoyant force on the balloon, and the weight of the rubber and the helium inside the balloon. the volume of the rubber itself is negligible
Physics
High School
what is the current in milliamperes produced by the solar cells of a pocket calculator through which 4.00 c of charge passes in 4.00 h?
Physics
High School
Is more elastic potential energy stored in a spring when the spring is compressed by 1 cm than when it is stretched by the same amount justify your answer?
Physics
High School
Loretta deposits $350 every quarter into a savings account that earns 4. 5% interest compounded quarterly. What is the balance after 7 years?.
Physics
High School
if the old radiator is replaced with a new one that has longer tubes made of the same material and same thickness as those in the old unit, what should the total surface area available for heat exchange be in the new radiator to achieve the necessary heat exchange rate at the recommended temperature gradient?
Physics
High School
hich of the following best describes how Einstein contributed to the development of the concept of gravity?A He described the movement of balls allowed to roll down inclined planes at various angles.B He said that all bodies would fall at the same speed if they were in a vacuum.C He said that the gravitational force exerted by an object is directly related to its mass.D He described gravity as curved space-time as opposed to a force.
Physics
College
Water + HeatObservations Before Interaction
Physics
High School
A battery provides a potential difference of 3v so that a current of 2. 5a flows through a bulb. What is the power of this bulb?.
Physics
High School
a radio-controlled race car requires a force of 9.0 newtons to propel it at a speed of 5.0 m/sec. the power rating of the car is:
Physics
High School
What is the elastic potential energy of a spring with K 144?
Physics
High School
How important is sleep for muscle recovery?
Physics
High School
A wave has a wavelength of 2.0 m and a frequency of 8.0 Hz. What is thespeed of the wave?OA. 16 m/sOB. 10 m/sOC. 0.3 m/sOD. 4.0 m/s4
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