Physics

an object at rest on a flat, horizontal surface explodes into two fragments, one seven times as massive as the other. the heavier fragment slides 7.90 m before stopping. how far does the lighter fragment slide?
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the type of radiation affected by greenhouse gasses is group of answer choices uv radiation. ir radiation. visible radiation. gamma radiation.
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What type of element gains electrons in ionic bonding, and what type of charge will it create?
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A 300 g football is kicked with an initial velocity of 140 m/s in a direction thatmakes a 30 angle with the horizon. Find the peak height of the football.
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a mass-spring oscillating system undergoes shm with a period t. what is the period of the system if the amplitude is doubled?
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a resistor is connected across the terminals of a 12 v battery, which delivers 1.47 j of energy to the resistor in 6.50 hours. what is the resistance of the resistor
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the rotational speed of a flywheel increases by 40%. by what percent does its rotational kinetic energy increase? explain your answer.
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a 10.0-mf capacitor is fully charged across a 12.0-v bat- tery. the capacitor is then disconnected from the battery and connected across an initially uncharged capacitor with capacitance c. the resulting voltage across each capacitor is 3.00 v. what is the value of c?
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a charged belt, 50 cm wide, travels at 30 m/s between a source of charge and a sphere. the belt carries charge into the sphere at a rate corresponding to 100 a. compute the surface charge denisty on the belt
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what is free fall? how is it different than movement in y direction? how is it different than movement in x direction? give examples to support your answers.
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a box supported by a 5.4 n vertical force and carried 1.9 m horizontal leah cross a room at a consistent speed. then the same box is pushed 1.9 m horizontally across a smooth table (smooth enough to ignore friction) by a 5.4 n horizontal force. in which case was more work done on the box by the 5.4 n force?
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which quantities should be gaphed on the vertical and horizontal axes to yield a striaght line whose slope could be used to calculate a numerical value for the acceleration due to gravvity g?
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gwhen a person steps forward out of a small boat onto a dock, the boat recoils backward in the water. why does this occur?
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a 1000kg car moving at 19.6 m/s on a flat road slams on the brakes and skids to a stop. the coefficient of kinetic friction between the road and car tires is 0.694. how many meters does the car go before it comes to a complete stop? (hint: think of work-energy theorem, and friction equation)
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What factors would create an ideal circuit?
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what is the calculus way to find potential energy from force? what is the relationship between force and potential energy?
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if you place a charge in the middle of the plates, can the charge move on a curved (non-linear) path?
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problem 3. a ramp of mass m is at rest on a horizontal surface. a small cart of mass m is placed at the top of the ramp and released. what are the velocities of the ramp and the cart relative to the ground at the instant the cart leaves the ramp?
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how long does it take electrons to get from a car battery to the starting motor? assume the current is 300a and the electrons travel through a copper wire with cross-sectional area 0.21 cm and length 0.85 m
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The formula for speed is Total Distance / Total Time. Based on the data table below, what is theaverage speed after 2 minutes? Please show all calculations.Time (min.) Distance (m)01230507590
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jupiter rotates once every 0.41 days. at what orbital radius will a satellite maintain a constant position?
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if one replaces the conducting cube with one that has positive charge carriers, what is the direction of the induced electric field?
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Which of the following best defines energy?the ability to do workthe resistance to motionhow fast an object movesamount of force in a given time
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The sound level produced by one singer is 71.8 dB. What would be the sound level produced by a chorus of 45 such singers (all singing at the same intensity at approximately the same distance as the original singer)? Answer in units of dB.
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