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In Fig. 22-30 the electric field lines on the left have twice theseparation as those on the right. (a) Ifthe magnitude of the field at A is 58 N/C, what is the magnitude ofthe force on a proton at A?
An archeological specimen containing 8.7 g of carbon has an activity of 1.8 Bq. How old (in years) is the specimen
An inquisitive physics student and mountain climber climbs a 55 m cliff that overhangs a calm pool of water. She throws two stones vertically downward 0.8 s apart and observes that they cause a single splash.
What is the minimum amount of electrical energy required by the refrigerator to carry out this process if it operates between reservoirs at temperatures of 20.0 °C and –20.0 °C?
A 350kg piano slides 3.8m down a 29 degree incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. Calculate the net work done on the piano
The height of a door is measured by four people and their measured values are 217.0 cm, 217.9 cm, 217.3 cm, and 217.6 cm, What is the standard deviation for the four measurements
A ray of light in air with a wavelength of 600 nm is incident on a liquid with an index of refraction of 1.5. find the wavelength of the ray of light in the liquid
A glass window with an area of 1.3m^2 is 4mm thick. What is the rate of heat of flow through the glass if one surface is at -5 degree celsius and the other is at 10.5 degree celsius
If a 60.0 kg person slides down an incline angled 25%u02DA below the horizontal and friction IS present with a coefficient of kinetic friction equal to k = 0.450. What is the person's acceleration
Two circular disks, each of area 1.90E-4 m2, are situated parallel to one another. The distance between them is small compared with their radii, Compute the force exerted by one on the other
A person is observing the motion of a ball on a flat surface and measuring its position in time. What will be the velocity of the ball relatively to each of the two observers
In a 30.0 s interval, 540 hailstones strike a glass window of area 0.600 m2 at an angle of 45.0° to the window surface. Find the pressure on the window
A 4.0 kg ball is located at x= 4.0m, y= 0m. A 6.0 kg ball is located at x= 2.0m, y= 4.0m, and a 3.0 kg ball s located at x= -1.0m, y= -2.0m. obtain the location of the center of the mass of this system
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