Answer: Air resistance and/or drag.
Explanation: The parachute adds drag to the parachutist, thus making him fall slower and safely to the ground.
A golf ball can lose compression but not for awhile. In general, golf balls should last a long time, unless you keep your golf balls in extreme conditions like in a freezer or a hot car compartment. These factors can affect the balls performance. Shelf life can also depend on what type the ball is. Most if not all of the state of the art golf balls, are coated with a thin layer of polyurethane polymer which makes the balls scratch resistant therefore gives longer protection for the inner layers that affects compression and other properties.At most, golf balls may exhibit reduced compression and performance in a decade or so (again consider external factors that may affect the golf balls). No scientific study has yet precisely determined when exactly golf balls lose compression and overall performance.
Answer:
Atoms are composed of protons,
and electrons.
Explanation:
Answer:
1) The current flows left to right through r
Explanation:
When the switch S is suddenly closed, current begins to flow in the wire, then a magnetic field is created in the wire due to this flow of current. The magnetic field flows out of the page right to left.
A current is induced in the wire due to the magnetic field, this induced current , according to lenz's law, opposes the magnetic field. Therefore, this induced current causes the magnetic field to move into the page which implies that the current will flow from left to right in r.
<u>Question:</u>
A piece of soft iron is placed in a solenoid increasing the magnetic field in an arrangement that can be switched on and off. Such a device is called
Answer
a hysteresis loop.
an electrosolenoid.
a permanent magnet.
a ferromagnet.
an electromagnet
<u>Answer:</u>
A piece of soft iron is placed in a solenoid increasing the magnetic field in an arrangement that can be switched on and off. Such a device is called an electromagnet.
<u>Explanation:</u>
When a magnet is processed by supplying electricity than it is called as electromagnet and therefore its strength can be fluctuated as dependent on amount of electricity supplied.
Here, when a iron piece is moved closer to a long coil of wire named solenoid physical interaction named electromagnetic force take place between two electrically charged particles.
This force is supplied by electromagnetic fields constructed from electric and magnetic field. This is also called as Lorentz force constituted from both electricity and magnetism. This property itself gives evidence of characteristics of material used for electromagnetism.