Answer:
The magnitude of the current is 4A (amperes).
Explanation:
We can use , where V stands for Voltage, I stands for current, and R stands for resistance to solve this problem.
A such:
Since the sound you hear from the siren has a HIGHER frequency
than the sound actually coming out of the siren, you know ... from
your knowledge of the Doppler effect ... that the distance between
you and the ambulance is decreasing.
Just from the sound alone, you can't tell whether it's the ambulance
moving toward you, or you moving toward the ambulance. Either
motion would produce the same effect, because the distance between
is decreasing. You'd need to find some other way to tell which one is
producing the motion. (at least MOST of it)
Answer:
Power generate by elephant = 666.67 W
Explanation:
Given:
Force = 2,000 N
Change in time = 45 Seconds
Distance = 15 meter
Find:
Power generate by elephant ?
Computation:
⇒ Work Done = Force × Distance
⇒ Work Done = 2,000 × 15
⇒ Work Done = 30,000
⇒ Power = Work Done / Time taken
⇒ Power generate by elephant = 30,000 / 45 seconds
⇒ Power generate by elephant = 666.67 W
Answer:
Option c
Explanation:
Magnetic field lines form loops starting from north pole to south pole outside the magnet and from south pole to north pole inside the magnet.
Thus the field is such that it is directed outwards from the North pole and directed inwards to the South pole of the magnet.
A compass in a magnetic field will will comply with the magnet's North pole directing towards the magnetic field.
Answer:
The buoyant force is a result of pressure exerted by the fluid. The fluid pushes on all sides of an immersed object, but as pressure increases with depth, the push is stronger on the bottom surface of the object than in the top
Explanation: