Question

nt1
write highest energy from following luse rule n+1
a) n=3,L=2,M=0,S=-1/2
b) n=3,L=2,M=-2,S=-1/2
c) n=3,L=3,M=-3,S=-1/2​

Answer 1

Answer:

Electrical energy can be transmitted using a high voltage of 132 kV.

(a) A voltage of 132 kV is the same as

(1)

A 132 V

B 1320 V

C 132 000 V

D 132 000 000 V

(b) Using a high voltage increases the

(1)

A current in the wires

B efficiency of transmission

C energy lost as heat

D resistance of the wires

(c) The high voltage can be reduced using a

(1)

A generator

B magnet

C transformer

D transmitter

(Total for Question 1 = 3 marks)

2 Planets and comets in our Solar System orbit the Sun.

(a) Which force causes planets and comets to orbit the Sun?

(1)

(b) The diagram shows the orbits of a planet and a comet around the Sun.

[not to scale]

(i) On the diagram, label the planet, the comet and the Sun.

(1)

(ii) Explain why it is possible for a planet and a comet in our Solar System to collide.

(2)

4 A student investigates the stretching of rubber bands.

She stretches four rubber bands as shown in the photograph.

She applies a force of 5.0 N and measures the length of the rubber bands.

She repeats the experiment with different numbers of rubber bands, using a force of

5.0 N each time.

The table shows her results.

Number of

rubber bands

Stretched length

in cm

1 43.2

2 28.0

3 21.5

4

5 17.6

6 17.0

(a) (i) Estimate the length of the four rubber bands shown in the photograph and

use your value to complete the table.

(1)

(ii) Suggest two reasons why your estimate may not be accurate.

(2)

1

(Total for Question 5 = 9 marks)

end of tube open

to atmosphere

narrow glass tube

liquid

column of

trapped air

ith wheels.

13 N

(a) The person pulls the suitcase with a horizontal force of 13 N for 110 m.

(i) State the equation linking work done, force and distance moved.

(1)

(ii) Calculate the work done on the suitcase by the person.

(2)

(iii) How much energy is transferred to the suitcase?

(1)

energy transferr

(b) The suitcase falls over.

Explain why it loses gravitational potential energy when it falls.

(2)

Explanation: