Answer: An IR remote (also called a transmitter) uses light to carry signals from the remote to the device so it can be controlled. It emits pulses of invisible infrared light that correspond to specific binary codes. These codes represent commands, such as power on, volume up, or channel down.
Explanation:
Answer:
a
b
Explanation:
From the question we are told that
The position of the column of mercury in the barometer is \
The density of mercury is
Generally the pressure of the atmosphere at that column is mathematically represented as
=>
=>
Generally the atmospheric pressure at sea level (Generally the pressure before the change in level of the mercury column) is
Generally the change in air pressure is mathematically represented as
=>
=>
Generally the height which the column will rise to is mathematically evaluated as
Here is the density of water with value
So
=>
Answer:
Explanation:
Given
mass of projectile
initial horizontal speed
height
Considering vertical motion
velocity gained by projectile during 26.7 m motion
v=final velocity
u=initial velocity
a=acceleration
s=displacement
Horizontal velocity will remain same as there is no acceleration
final velocity
Initial kinetic Energy
Final Kinetic Energy
Work done by all the force is equal to change in kinetic Energy of object
Work done by gravity is
Answer:
Zero
Explanation:
Impulse is defined as the change in momentum.
Impulse is also defined as the product of force and the time duration of application of the force.
In the given problem, since there is no motion in the vertical direction, therefore the velocity of the box along the vertical direction is zero. So, momentum of the box along the vertical is also zero.
Hence the change is momentum is also zero along vertical direction.
Thus the impulse delivered by the box is zero.
Explanation:
Eq 2 ) is Equation for force on a charge Q1 due to charge Q2 separated by a distance R .. it is Equation for Coloumb's law !!
Where , k = 1/4π€
Eq 3 ) is Equation for force on mass m1 due to mass m2 separated by distance R .. it is Newton's law of Gravitation
Where , G = universal Gravitation constant