Answer:
mass of the object is : -
=》15.55 kg
Explanation:
force (f) = mass (M) × Acceleration (A)
=》280 = M × 18
=》M = 280 ÷ 18
=》M = 15.55 kg
Answer:
The ratio of the acceleration of the proton to that of the deuteron is 2
Explanation:
For a moving charge in magnetic field, the magnetic force is balanced by force due to its motion. So,

Acceleration of proton,
.........(1)
Acceleration of deuteron,
..........(2)
Since, a deuteron has the same charge as the proton but has twice its mass.
Dividing equation (1) and (2) we get :



So, the ratio of the acceleration of the proton to that of the deuteron is 2. Hence, the correct option is (a).
Answer:
1350N
Explanation:

The force exerted on the hand would be the momentum divided by the duration of contact.
As the hand is coming to rest, final velocity would be 0

The magnitude of the force would be 1350N
Answer:
Pardon
Explanation:
Using the fundamental laws of mass-energy conservation. We can determine that the photon particle is fundamental and delivers the energy required to change the mass of an object into energy.
It is fairly easy to build an electromagnet. All you need to do is wrap some insulated copper wire around an iron core. If you attach a battery to the wire, an electric current will begin to flow and the iron core will become magnetized. When the battery is disconnected, the iron core will lose its magnetism. Follow these steps.
Step 1 - Gather the Materials
One iron nail fifteen centimeters (6 in) long
Three meters (10 ft) of 22 gauge insulated, stranded copper wire
One or more D-cell batteries
Step 2 - Remove some Insulation
Step 3 - Wrap the Wire Around the Nail
Step 4 - Connect the Battery