WorksheetsPhysics XI
Total questions: 25
Worksheet time: 13mins
Covsetvation of energy
Energy can't be created or destroyed only blown up
Energy can't be created or destroyed only sealed
Energy can't be created or destroyed only transferred
Energy can't be created or destroyed only created
during inelastic collision of two bodies the quantity that always remains conserved is
total mechanical energy
total K.E.
total linear momentum
total P.E.
In which situation is work not being done?
a 26 Kg wagon being pulled
a 30 Kg present being held above the floor
a 60 Kg weight being lifted up off the ground
a 13 Kg cat running across the floor
A 75 kg skier is standing at rest at the top of a 25 m hill. What would his speed be at the bottom of the hill?
18,375 m/s
11.06 m/s
240,000 m/s
22.1 m/s
Describe COHESION.
Water molecules attracted to other substances.
Water molecules climbing upwards against the force of gravity.
Water molecules dissolving many substances because of its polarity.
Water molecules attracted to other water molecules.
surface tension of water can be reduced by
heating
Adding soap solution
cooling
adding salt
What is the main goal of a telescope
make really small objects larger
make distant objects visible
display images onto screens or walls
generate 3-dimensional images of light
These moments would be in equilibrium when...
d1 + f1 = d2 +f2
d1 - f1 = d2 - f2
d1 x f1 = d2 x f2
d1 x f2 - d2 x f2
How do you work out Young Modulus
tensile stress x tensile strain
tensile stress / tensile strain
tensile strain / tensile stress
tensile strain + tensile stress
Which of the following numerical expressions has three significant figures ?
0.700
7.077
0.070
70.70
