why does temperature remain constant in ohm law
diff between acceleration and retardation..............?
Even though the drift speed of electron is only 1millimeter per second , why will any electronic appliance start as soon as we switch it on ?(if the drift speed of electron is 1mm per second it should take a long time for the appliance to get started )
A copper wire has diameter 00.5mm and resistivity of 1,6x10.8m. What will be the length of this wire to make its resistance 10 ohm. How does the resistance change if the diameter is doubled.
A car is moving with a velocity 20 m s -1. The brakes are applied to retard it at a rate of 2 m s -2
what will be the velocity after 5 s of applying the brakes?
a train is moving with a velocity of 90 km/h.
When the brakes are applied , the retardation produced is 0.5 m/s2 .Find the velocity after 10s and time taken by the train to come at rest
NAME AND STATE THE REACTION AND REACTION WHEN A MOVING TRAIN COLLIDES WITH A STATIONARY TRAIN
a force of 10n acts on abody of mass 2kg for 3s, initially at rest.calculate
(i) the velocity acquired by the body
(ii) change in momentum of the body
[ans=(i) 15m/s (ii)30 kg m/s]
what is gold-leaf electroscope?
A train moving with a velocity of 90 km/hr. When the brakes are applied, the retardation produced is 0.5 m/s. Find : (i) the velocity after 10 seconds, and (ii) the time taken by the train to come to rest.
(ii) parallel across the same voltage supply.
What should be the ratio of area of cross section of the master cylinder and wheel cylinder of a hydraulic brake so that a force of 15N can be obtained at each of its brake shoe by exerting a force of 0.5 N on the pedal ?
The displacement time graph for two particles A and B are straight lines inclined at 300 with time axis and at 300 to displacement axis respectively. Calculate ratio of velocities of the two particles
Rockets work on the principle of Newton’s third law of motion. In rockets, large amounts of hot gases are allowed to exit through a narrow opening. In turn, the fast-moving gases exert a force on the rocket which pushes the rocket upward.
Please explain
how to find numericals of vernier calliper and
screw guage
in easy way
why does temperature remain constant in ohm law
diff between acceleration and retardation..............?
Even though the drift speed of electron is only 1millimeter per second , why will any electronic appliance start as soon as we switch it on ?(if the drift speed of electron is 1mm per second it should take a long time for the appliance to get started )
A copper wire has diameter 00.5mm and resistivity of 1,6x10.8m. What will be the length of this wire to make its resistance 10 ohm. How does the resistance change if the diameter is doubled.
A car is moving with a velocity 20 m s -1. The brakes are applied to retard it at a rate of 2 m s -2
what will be the velocity after 5 s of applying the brakes?
a train is moving with a velocity of 90 km/h.
When the brakes are applied , the retardation produced is 0.5 m/s2 .Find the velocity after 10s and time taken by the train to come at rest
NAME AND STATE THE REACTION AND REACTION WHEN A MOVING TRAIN COLLIDES WITH A STATIONARY TRAIN
a force of 10n acts on abody of mass 2kg for 3s, initially at rest.calculate
(i) the velocity acquired by the body
(ii) change in momentum of the body
[ans=(i) 15m/s (ii)30 kg m/s]
what is gold-leaf electroscope?
A train moving with a velocity of 90 km/hr. When the brakes are applied, the retardation produced is 0.5 m/s. Find : (i) the velocity after 10 seconds, and (ii) the time taken by the train to come to rest.
(ii) parallel across the same voltage supply.
What should be the ratio of area of cross section of the master cylinder and wheel cylinder of a hydraulic brake so that a force of 15N can be obtained at each of its brake shoe by exerting a force of 0.5 N on the pedal ?
The displacement time graph for two particles A and B are straight lines inclined at 300 with time axis and at 300 to displacement axis respectively. Calculate ratio of velocities of the two particles
Rocket
Rockets work on the principle of Newton’s third law of motion. In rockets, large amounts of hot gases are allowed to exit through a narrow opening. In turn, the fast-moving gases exert a force on the rocket which pushes the rocket upward.
Please explain
how to find numericals of vernier calliper and
screw guage
in easy way