Aboy pulls his toy on a smooth horizontal surface with a rope inclined at 60 degrees to the horizontal. if the effective force pulling the toy along the horizontal surface is 5n, calculate the tension in the rope

As per the question the rope is inclined at an angle of 60 degree with the horizontal.

Let the tension produced in the rope is T.

The effective force which pulls the toy along horizontal direction is 5 N.

Resolving T into two components we get-

 in vertical upward direction.

in horizontal direction.

The vertical component is balanced by the weight of the body i.e

Hence the toy moves due to the horizontal component.

                                      [   ]

Hence the tension produced in the rope is 10 N.

The answer would be D, when the plastic strip and cloth are rubbed together there is a transfer of electrons from the plastic strip to the cloth leaving the plastic strip positively charged as it lost electrons, while the cloth becomes negatively charged.

1.Oscillatory motion : this is the to and fro movement of wave signals from the antenna

2.a.Microwave Oven- produces microwaves

b.. Light bulb-produces visible light

3.Radio signals does not pass through a solid barrier in the dark. Just like how light can't pass through a rock. The radio signals are restored as the car gets to the entrance of the tunnel

Explanation:

Waves is a disturbance which travels displacement and transfers energy without displacing the medium itself

Most waves are caused by vibrations. What motion in a transmitting antenna causes the vibrations that produce radio waves?

Oscillatory motion : this is the to and fro movement of wave signals from the antenna

2. Name two common household appliances that produce electromagnetic waves other than radio waves. What kind of electromagnetic waves do they produce?

a.Microwave Oven- produces microwaves

b.. Light bulb-produces visible light

3.When you are in a car and it passes through a tunnel, the radio signal is sometimes lost. Why do you think this happens?

Radio signals does not pass through a solid barrier in the dark. Just like how light can't pass through a rock. The radio signals are restored as the car gets to the entrance of the tunnel