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common concepts of physics

Total questions: 25

Worksheet time: 13mins

Name
Class
Date
1.

The Air India Flight AI 319 from Guwahati to Kolkata, flies at 250 m/s to the west with respect to the air. The air is moving at 35 m/s to the north with respect to the ground. Find the velocity of AI 319 with respect to the ground near Bagdogra

a)

252 m/s

b)

222 m/s

c)

435 m/s

d)

125 m/s

2.

A motorboat, which has a speed of 5 m/s in still water, is crossing a river (from west to east) The river's current is flowing south at 3.3 m/s. What is the magnitude of the boat’s resultant velocity with respect to the starting point?

a)

3.3 m/s

b)

5.0 m/s

c)

6.0 m/s

d)

8.3 m/s

3.
When an object has a zero net force, the object is ___________. 
a)
in equilibrium 
b)
unbalanced
c)
in pain
d)
in a dark place
4.
What is the net force?
a)
40 N left
b)
0 N Balalnced
c)
400 N right
d)
40 N right
5.
The force resulting from the pull of the earth on an object.
a)
mass
b)
gravity
c)
acceleration
d)
unbalance
6.

What is the velocity (Vt) of a point on the rim of a standard 12-inch (diameter=30.4 cm) wide vinyl record playing at 33.3 rpm?

a)

53.1 cm/s

b)

106 cm/s

c)

26.6 cm/s

d)

10.1 cm/s

7.

A shopkeeper throws a cut piece of cake on a spring scale which oscillates about the equilibrium position with a period of T = 0.500 seconds. The amplitude of the vibration is A = 2.00 cm. What is the frequency?

a)

1.00 hertz

b)

3.00 hertz

c)

4.00 hertz

d)

2.00 hertz

8.

Sumit ran 50 meters in 10 seconds. What was Sumit's average speed?

a)

2 m/s

b)

5 km/h

c)

5 m/s

d)

5 m/s North

9.
When an object has a net force of 0 N, it is an example of what kind of force?
a)
Balanced
b)
Unbalanced
c)
Acceleration
d)
Gravity
10.

What is emitted during Beta Radiation?

a)

A high-energy Electron.

b)

A neutrino

c)

Neutrons.

d)

Nuclei

11.

What is emitted during Gamma Radiation?

a)

Particles.

b)

Protons

c)

Electro magnetic waves of 1018 hertz

d)

Electro magnetic waves of 1012 Hertz

12.
What is emitted during Alpha Radiation?
a)
A helium nuclei.
b)
A helium atom
c)
Gamma Rays.
d)
Positrons
13.
Motion occurs when......................
a)
the speed of an object changes. 
b)
an object's distance from another object changes. 
c)
there is an increase or decrease in an object's speed. 
14.
a)
This is an example of Newton's First Law.
b)
This is an example of Newton's Second Law.
c)
This is an example of Newton's Third Law.
15.
a)
This is an example of Newton's First Law.
b)
This is an example of Newton's Second Law.
c)
This is an example of Newton's Third Law.
16.
a)
This is an example of Newton's First Law.
b)
This is an example of Newton's Second Law.
c)
This is an example of Newton's Third Law.
17.
a)
This is an example of Newton's First Law.
b)
This is an example of Newton's Second Law.
c)
This is an example of Newton's Third Law.
18.
What is the net force?
a)
17 N Right
b)
3 N Right
c)
3 N Left
d)
17 N Left
19.
If two objects have different temperatures, heat will flow from the warmer object to the cooler one UNTIL ____________
a)
one reaches a temperature of zero
b)
they both have an equal temperature
c)
one runs out of energy
20.
All atoms are vibrating, hot atoms have more energy. When hot atoms bump into cold atoms they transfer energy.
a)
True
b)
False
21.
Temperature is a measure of the...
a)
total energy in a substance
b)
total kinetic energy in a substance
c)
average potential energy in a substance
d)
average kinetic energy of molecules in a substance
22.
How much heat is absorbed when 355g of water goes from 25-45 degrees Celsius? The specific heat of water is 4180 J/kg.K 
a)
21945 J
b)
21945 g
c)
29678 J
d)
29678 g
23.
A 300g piece of aluminum at 100 oC is placed in a 150g of H2O at 200 oC. The final temp. of the mix is 35 oC. What is the specific heat of the aluminum if the specific heat of the water is 4180 J/kgK?
a)
22415 J
b)
22415 g
c)
32415 J
d)
32415 g
24.
Which cools at a faster rate, a pot of boiling water left at room temperature or a same-sized pot of warm water left at room temperature?
a)
boiling water
b)
warm water
c)
both cool at an equal rate
25.
Recall the equation to calculate the change in heat (Thermal Energy) of an equation:
 ∆Q = mc∆T
If 
∆Q = 100 J
m = 10 g 
∆T = 2 °C
What is c (in J/kgK) ?
a)
20 
b)
5
c)
25
d)
200