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The mean distance between earth and the sun is 1.50 x 1011 m. The average intensity of solar radiation incident on the upper atmosphere of the earth is 1390 W/m2. Assuming the sun emits radiation uniformly in all directions, determine the total power radiated by the sun.
After being accelerated to a speed of 1.7×10 5 m/s, the particle enters a uniform magnetic field of strength 1.00 T and travels in a circle of radius 35.0 cm (determined by observing where it hits the screen as shown in the figure). The results of th..
A convex lense of focal length 18 cm is used as a magnifying glass. at what distance from a tiny insect must you hold this lense to get a magnification of 3.
You fire a gun horizontally that is 25m off the ground and the bullet goes at 200m/s. What is the time it takes for the bullet to hit ground, how far down range does bullet travel, and what is the resultant velocity (in m/s) and final angle.
Two people stand 3 m away from a large plane mirror and spaced 3.8 m apart in a dark room. At what angle of incidence should one of them shine a flashlight on mirror so that the reflected beam directly strikes the other person.
In the typical X-ray lamp. The electrons are accelearated in the potential difference of 10000V before hitting the water cooled electrode. Find the shortest wavelength of X-rays produced in this lamp.
Billiard ball A of mass = 0.130 moving with speed = 2.80 strikes ball B, initially at rest, of mass = 0.150. Consequently of the collision, ball A is deflected off at an angle of 28.0 with the speed = 2.00.
A 3.8×10-24-kg particle is vibrating with simple harmonic motion with a period of 1.3×10-5 s and a maximum speed of 1.55×103 m/s. A) Calculate the angular frequency. B) Find the maximum displacement of the particle. I know the answer to part A) 48..
A 246 kg wooden raft floats on a lake. as a 85 kg man stands on the raft, it sinks 5.0 cm deeper into the water. When he steps off, the raft vibrates for a while.
A ballplayer catches a ball 2.75 seconds after throwing it vertically upward. With what speed did he throw it? Calculate the final & resultant velocity and acceleration.
An artillery shell is fired with a minimal velocity of 470m/s at 50o above the horizontal. To clear an avalanche, it explodes on a mountain side 38 s after firing.
How large does the radius R of the dish have to be to achieve an electric field vector amplitude of 0.1 rm mV/m at the receiver.
how many days would be required to move one of the charges.
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