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A certain force gives an object of mass m1 an acceleration of 12.0 m/s2 and an object of mass wt2 ?rr acceleration of 3.30 m/s2. What acceleration would the force give to an object of mass?
(a) m2 - m1 and
(b) m2 + m1?
a 60 w lamp is connected in series with a 12 v emf. how much current in a flows through the lamp? please round the
A simple pendulum makes 137 complete oscillations in 3.20 min at a location where g = 9.80 m/s2. Find the period of the pendulum.
Sunlight strikes a piece of crown glass at an angle of incidence of 38 degree. Find the difference in the angle of refraction between a yellow (580 nm) and a violet (410 nm) ray within the glass
a convergent lens has a focal length of 7cm. a 2cm tall image forms 30cm from the lens.a how far is the magnification?b
a child is in danger of drowning in the merimac river. the merimac river has a current of 3.4 kmhr to the east. the
At the equator, near the surface of Earth, the magnetic field is approximately 42.0 µT northward and the electric field is about110 N/C downward in fair weather. Calculate the gravitational, electric, and magnetic forces
An extreme skier, starting from rest, coasts down a mountain slopethat makes an angle 25.0° with the horizontal. How fast is she going just before she lands
While the repair shop works on your voltmeter, they loan you anunusual replacement: Rather than measuring the potential differenceacross a resistor, it measures the amount of charge that flowed,and the change in electric potential energy of that c..
The image is formed on a screen 18 cm from the lens. You then place the concave lens halfway between the convex lens and the screen. To obtain a sharp image, you need to move the screen 15 cm further away from the lenses. What is the focal length ..
An electric car accelerates for 8.0 s by drawing energy from its300-V battery pack. During this time,1190 C of charge passes through thebattery pack. Find the minimum horsepower rating of the car.
The current in an electron beam in a cathode-ray tube is measured to be 70 uA. How many electrons hit the screen in 5.0s
A student is reading a lecture written on a blackboard. The lenses in her eyes have a refractive power of 56.11 diopters, and the lens-to-retina distance is 1.791 cm. (a) How far is the blackboard from her eyes? (b) If the writing on the blackboard i..
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