Answer:
When a charged balloon is brought near a wall which is neutral, it still sticks to the wall because the charged balloon induces the charge in the neutral body.
If the balloon is positively charged, the electrons in the neutral body will be attracted to the balloon causing an imbalance of charges in the neutral body.
Similarly if the balloon is negatively charged, it will attract the protons of the neutral body and will stick to it.
The phenomenon is called induced charge into the neutral body.
Gravitational force and Potential energy
Answer:
Explanation:
Net torque is calculated by multiplying the force with distance from the point of application of force to the point of pivot .
If more than 2 forces are present, then we either subtract the product of forces with their respective distances from pivot point or we add them . It depends on whether they both are present on opposite sides of pivot or on same side of pivot .
When a force is applied directly to the pivot point of balance, then the torque on due that force = 0 (zero) .
It is so because the torque is defined as the product of force and perpendicular distance from the pivot point but here the distance is 0 , therefore torque is zero.
On the average throughout a month, the moon appears to move
through the sky with a period of about 24 hours 48 minutes.
So if Jesse sees the Moon rise around 6:00 PM, he will see it
set the next morning if he is awake around 6:24 AM, and rise
again the next evening around 6:48 PM.
Answer:
1.) Waves carry energy through empty space or through a medium without transporting matter. While all waves can transmit energy through a medium, certain waves can also transmit energy through empty space. ... When waves travel through a medium, the particles of the medium are not carried along with the wave.
2.) Mechanical Waves are waves which propagate through a material medium (solid, liquid, or gas) at a wave speed which depends on the elastic and inertial properties of that medium. There are two basic types of wave motion for mechanical waves: longitudinal waves and transverse waves. Longitudinal waves vibrating in the direction of propagation while Transverse waves vibrate at right angles to the direction of its propagation.
3.) They can carry a little energy or a lot of energy. They can be transverse or longitudinal. However, all waves have common properties—amplitude, wavelength, frequency, and speed. Amplitude describes how far the medium in a wave moves.
I hope this helps!
