The direction of the magnetic field in a certain region of space is determined by firing a test charge into the region with its velocity in various directions in different trials. the field direction is 1. the direction of the velocity when the magnetic force is a maximum. 2. the direction of the velocity when the magnetic force is zero. 3. none of these 4. perpendicular to the velocity when the magnetic force is zero. 5. the direction of the magnetic force.
Answers: 3
Physics, 21.06.2019 13:30
An air bubble of volume 20 cm³ is at the bottom of a lake 40 m deep, where the temperature is 4.0°c. the bubble rises to the surface, which is at a temperature of 20°c.take the temperature of the bubble’s air to be the same as that of the surrounding water. just as the bubble reaches the surface, what is its volume?
Answers: 1
Physics, 21.06.2019 16:00
The rigid beam is supported by the three suspender bars. bars ab and ef are made of aluminum and bar cd is made of steel. if each bar has a cross-sectional area of 450 mm2, determine the maximum value of p if the allowable stress is (σallow)st = 200 mpa for the steel and ( σallow)al = 150 mpa for the aluminum. est = 200 gpa and eal = 70 gpa.
Answers: 2
Physics, 22.06.2019 00:30
Orange juice has a lower or higher viscosity than chocolate syrup
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Physics, 22.06.2019 06:30
Which features on mars point to the possibility of liquid water on the planet? impact craters with sharp rims volcanic cones with craters gullies and stream-like channels mountain ranges with faults
Answers: 1
The direction of the magnetic field in a certain region of space is determined by firing a test char...
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