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Honeybees acquire a positive charge while flying through the air. The rapid motion of the wings through the air provides the "friction" to strip charges off the bee, just like running a comb through your hair. Assume that a bee has acquired a charge of 10.0picoCoulombs, and is hovering 1.9mm above a pollen grain, which has a charge of ?1.0×10?2picoCoulombs. Treat both the bee and pollen as point charges.
A) What is the strength of the electrostatic force on the pollen grain?
B) If the pollen grain's mass is 3.2×10?9g,what is the strength of the gravitational force on the pollen grain?
C) Does the pollen have to be negatively charged to be attracted to the bee?
Riders on the "Great American Revolution" loop-the-loop roller coaster wear seatbelts as the roller coaster negotiates its 6.5m -radius loop with a speed of 9.8m/s.
Xu is a new material discovered by a TA. The specific heat C and latent heat L of Xu are measured by heating up a piece of Xu sample. The temperature T (in K) of Xu sample varying as a function of heat Q (in 103 J) transferred to it.
Gas in a container is at a pressure of 1.1 atm and a volume of 6.0 m3. What is the work done on the gas if it expands at constant pressure to twice its initial volume
What is the piston height if the temperature is 30C. How far apart are the plates if there's air between them.
Suppose the length of a clock's pendulum is changed by 1.000%, exactly at noon one day. What time will it read 24.00 hours later, assuming it the pendulum has kept perfect time before the change? Note that there are two answers, and perform the ca..
While John is travelling along a straight interstate highway he notices that the mile marker reads 243 km john travels until he reaches his path to the 178 km marker what is john's resultant displacement from the 243 km marker.
The electric field points radially outward at all points within the sphere (and outside too, for that matter). What is the strength of the electric field at a distance r from the center, inside sphere.
A ball thrown upward returns to the same level after 4s in the air. How long would that ball take to reach the same level
A 1000 {rm kg} wrecking ball hangs from a 15 {rm m}-long cable. The ball is pulled back until cable makes an angle of 25.0^circle with the vertical. By how much has the gravitational potential energy of the ball changed .
An electron and a proton are each placed at rest in a uniform electric field of magnitude 564 N/C. Calculate the speed of each particle 44.4 ns after being released.
An object 9 cm tall is placed at the zero mark of a meterstick. A spherical mirror located at some point on the meterstick creates an image of the object that is upright, 4 cm tall, and located at the 49.0 cm mark of the meterstick.
A 75g lead sinker at 90 degrees celsius is placed in 500 cm^3 of water at 20 degrees celsius. What is the final temperature of the sinker
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