A 100 kg device is pulled up a plane inclined at 30° to the horizontal with a force of 1000 N. If the coefficient of friction between the device and the surface is 0.25, determine the total force opposing the motion.
[ g = 10 ms-2]
A solenoid is constructed by winding an insulated copper on a long test tube. A constant direct current is passed through the solenoid. Which of the following actions will not increase the strength of the magnetic field of the solenoid? Inserting a
The following statements are advantages of a solid dielectric material between the plates of a capacitor except that
Which of the following devices is used to compare the relative magnitudes of charges on two given bodies?
The instrument used to measure relative humidity is a
