Answer:
The kinetic energy would decrease because it has less mass
Explanation:
A battery
Answer:
Explanation:
Option a is correct
If puck and pick constitute a system then the momentum of the system is conserved but not this may not be valid for the puck .
Option e is correct
If puck and pick is the system then momentum is conserved but because of the presence of friction, mechanical energy is not conserved.
Friction will cause the energy to dissipate in heat.
Answer:
Density is an important physical property of matter. It reflects how closely packed the particles of matter are. When particles are packed together more tightly, matter has greater density.
Explanation:
Answer: A piston-filling fountain pen has a piston — just like in a car — inside the barrel. This piston goes down to expel air or ink and then back up, pulling ink into the barrel. The typical process is very simple, assuming the pen is clean and dry: Push the piston down, expelling any air in the barrel
Answer:
North of east
Explanation:
Given
Research station is 9.6 km away in 
North of east
after travelling 3.1 km 
north of east
Position vector of safari after 3.1 km is
Position vector if had traveled correctly is
Now applying triangle law of vector addition we can get the required vector
Direction is given by
