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Which of the subsequent is true about the direction of current?
1. The direction of the current is from low voltage to high voltage.
2. The direction of the current is away from the negative terminal of the battery.
3. The direction of the current is the same as the direction that electrons are moving.
4. The direction of the current is the same as the direction that positive charges are moving.
5. None of the above
The light from a distant star takes 252 years to reach the earth. How far away is the star from the earth
An object with a charge of -4.4?C and a mass of 1.7×10?2kg experiences an upward electric force, If the electric charge on the object is doubled while its mass remains the same, find the direction and magnitude of its acceleration
an air mattress is 2.3 m long 0.66 m wide and .14 m deep. if the air mattress isteslf has a mass of 0.22 kg what is
typical blood velocities in the coronary arteries range from 10 to 30 cms. an electromagnetic flowmeter applies a
A rescue plane wants to drop supplies to isolated mountain climbers on a rocky ridge 235 m below. With what speed do the supplies land in the latter case
A block with a weight of 3.0 N is at rest on a horizontalsurface. A 1.0 N upward force is applied to the block by meansof an attached vertical string. What are the (a) magnitude of and(b) direction of the force of the block on the horizontalsurface?
A 20 cm long organ pipe is filled with air and is open at one end and closed at the other. The velocity of sound in air at 0°C is 331 m/s. What is the wavelength of the fundamental frequency
a cube of ice is taken from the freezer at -8.2c and placed in a 92g aluminum calorimeter filled with 309g of water at
a particle of mass m slides without friction on a wedge of angle a and mass m that can move without friction on a
A 51kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 250N. For the first 10.5m the floor is frictionless, and for the next 10.5m the coefficient of friction is 0.18. What is the final speed of the crate af..
What speed must she have at point 3, so that the normal force at the top has the same magnitude as it did at the bottom.
During a test, a NATO surveillance radar system, operating at 12 GHz at 155 kW of power, The aircraft reflects radar waves as though it has a cross-sectional area of only 0.22 m2. What is the power of the aircraft's reflection
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