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Q. The human body can survive an acceleration trauma incident (sudden stop) if the magnitude of the acceleration is less than 250;{rm m}/{rm s}^{2}.
If you are in a car accident with an initial speed of 107 km/h and you are stopped by an airbag that inflates from the dashboard, over what distance must the airbag stop you for you to survive the crash?
Q. A uniform electric field of magnitude 229 V/m is directed in the positive x direction. A +21.4-microCoulomb charge moves from the origin to the point (x,y) = (20.0 cm, 13.8 cm).
What was the change in the potential energy (in Joules) of this charge?
The average intensity of sunlight at the top of the earth's atmosphere is 1390 W/m2. What is the most energy that a 30 m multiplied by 55 m solar panel might collect in one hour in this sunlight.
A loudspeaker of mass 25 {rm kg} is suspended a distance of h = 1.60 {rm m} below the ceiling by two cables that make equivalent angles with the ceiling. Each cable has a length of l = 3.50 {rm m}.
A thin, light wire is wrapped around the rim of a wheel. The wheel rotates without friction about a stationary horizontal axis that passes through the center of the wheel. The wheel is a uniform disk with radius 0.28. An object of mass 4.0 is suspend..
Dan is gliding on his skateboard at 2.0 m/s. He suddenly jumps backward off the skateboard, kicking the skateboard forward at 8.0 m/s. How fast is Dan going as his feet hit the ground? Dan's mass is 60 kg and the skateboard's mass is 5.0 kg.
what advantage might there be in using two identical capacitors in parallel connected in series with another parallelpair, rather than using a single capacitor.
An electric field of 7.90 x10^5 V/m is desired between two parallel plates, each of area 41 cm2 and separated by 2.45 mm of air. What charge should be on each plate.
A 70.0 kg circus performer slides 4.90m down a pole to the circus floor, starting from rest. What is the kinetic energy of the performer as she reaches the floor if the frictional force on her from the pole (a) is negligible (she will be hurt) and (b..
Determine magnitude of the force from the ground on each front wheel. what is magnitude of the duck's velocity.
Two people stand 3 m in front of large plane mirror and space 5m a part in dark room at what angle of incidence should one of them shine a flashlight on the mirror so that reflected beam directly strickes the other person.
A uniform solid sphere of radius 0.503 m and mass 15.7 kg turns counter clockwise (when viewed from above) about the vertical axis through its center. Find its vector angular momentum when its angular speed is 3.08 rad/s. Wouldn't you use the formula..
How numerous years would it take a thermally insulated one-million-kilogram chuck of granite to undergo a 1000k boost in temperature?
How many kilocalories of heat are produced when the brakes are used to bring a 930 kg car to rest from a speed of 102 km/h.
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