Physics

A Ball A and a Ball B collide elastically. The initial momentum of Ball A is -2.00kgm/s and the initial momentum of Ball B is -5.00kgm/s. Ball A has a mass of 4.00kg and is traveling at 2.50 m/s after the collision. What is the velocity of ball B if it has a mass of 6.50kg?
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Light of the same wavelength passes through two diffraction gratings. One grating has 4000 lines/cm, and the other one has 6000 lines/cm. Which grating will spread the light through a larger angle in the first-order pattern
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A 1-cm long wire carrying 15 A is inside a solenoid 4 cm in radius with 800 turns/m carrying a current of 40 mA. The wire segment is oriented perpendicularly to the axis of the solenoid. What is the magnitude of the magnetic force on this wire segment in ???? N?
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Describe an experiment to find the volume of an irregular- shaped ston
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A rocket travels 1.3 km in 62 ms. What is its average speed in ms1? Do not give your answer in scientific notation. The answer should be given to 2 significant figures.
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The spectra of most galaxies show redshifts. This means that their spectral lines Group of answer choices always are in the red part of the visible spectrum. have wavelengths that are longer than normal. have a higher intensity in the red part of the spectrum. have wavelengths that are shorter than normal.
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A refrigerator has a coefficient of performance equal to 4.00. The refrigerator takes in 110 J of energy from a cold reservoir in each cycle. (a) Find the work required in each cycle. J (b) Find the energy expelled to the hot reservoir. J
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An observer on Earth sees Planet X to be stationary and also sees a rocket traveling toward Planet X at 0.5c. The rocket emits a pulse of light that travels outward in all directions. According to an observer on Planet X, how fast is the light pulse traveling toward them? a) 2c/3 b) c/2 c) 2c/3 d) 5c/6 e) c
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Describe the laws of liquid pressure and explain the term fluid. (Please try to give the correct answer 'coz it's urgent!)
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The time delay between transmission and the arrival of the reflected wave of a signal using ultrasound traveling through a piece of fat tissue was 0.13 ms. At what depth did this reflection occur? (The average propagation speed for sound in body tissue is 1540 m/s)
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what is field selection process
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The graph below shows a cycle of a heat engine. Add the following labels to the graph. Some labels are used more than once. Labels: Isobaric process; W= 0J; Work done on the system; Work done by the system.I will give brainliest!P.S. AL2006 if you see this please help!
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A ball is thrown upward from the edge of a cliff with an initial velocity of 6 m/s. (a) How fast is it moving 0.5 s later? In what direction? (b) How fast is it moving 2 s later? In what direction?
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ng vt no sau y mu i nui c th khng pha trn gia mu giu O2 v mu giu CO2? A.B st, chim, th B.C, b st, chim C.C, lng c, b st D.C, chim, th
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Write down the conservation of momentum?
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Please help I cant get this right
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state any two effects of gravitational force
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2) Define volume. Explain in detail how can volume of irregular object be determined? PLZ HELP NEED THIS RN
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why meter cube is called derived unit
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A converging lens is used to focus light from a small bulb onto a book. The lens has a focal length of 10.0 cm and is located 40.0 cm from the book. Determine the distance from the lens to the light bulb.
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matter can enter and exit which of the following systems?A. isolated onlyB. open onlyC. both open and isolatedD. Both closed and isolated
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Please help me with these I might need more than only 1 person to answer
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In first case a mass M is split into two parts with one part being 1/6.334 th of the original mass. In second case M is split into two equal parts. In both the cases the two parts are separated by same distance. What ratio of the magnitude of the gravitational force in first case to the magnitude of the gravitational force in the second case
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A car has a mass of 2000 kg. While it is traveling along a perfectly flat road, it goes around an unbanked turn that has a radius of 40.0 m. The coefficient of static friction between the car tires and the road is 0.500. The car travels successfully around the turn at a constant speed of 10.0 m/s. Calculate the magnitude of the car's acceleration as it goes around the turn. _______ m/s^2
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