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Worksheetspreparing to summative assessment Term 1, Grade 11
Total questions: 21
Worksheet time: 15mins
Which combination of units could be used for expressing the power dissipated in a resistor?
newton per second
newton second
newton metre
newton metre per second
A micrometer screw gauge is used to measure the diameter of a wire. The reading on the micrometer with the jaws closed is (–0.05 +,- 0.02) mm. The reading with the wire in position between the two jaws is (+1.03 +,- 0.02) mm. What is the diameter of the wire?
(0.98 +,- 0.02) mm
(1.08 +,- 0.02) mm
(0.98 +,-0.04) mm
(1.08+,- 0.04) mm
A projectile is launched at an angle to the horizontal at time t = 0. It travels over horizontal ground, as shown.
Air resistance is negligible. Which graph best shows the variation with t of the speed of the projectile from when it is launched to when it lands on the ground?
The graph shows how quantity P varies with quantity Q for a body falling vertically downwards in a uniform gravitational field with air resistance.
P-acceleration
Q-force of air resistance
P-acceleration
Q- time
P-velocity
Q-force of air resistance
P-velocity
Q-time
Vectors which lie on the same plane, in a three-dimensional space called ...
(a)
Water of depth 9.0 cm is covered by oil of depth 5.0 cm in a measuring cylinder. The density of the water is 1000 kg m^–3 and the density of the oil is 800 kgm^–3. What is the total pressure exerted on the base of the measuring cylinder due to the oil and water?
390Pa
880Pa
1200Pa
1300Pa
Define density: mass/ (a)
Which expression has the same SI base units as pressure?
The speed v of a liquid leaving a tube depends on the change in pressure 'P and the density ρ of the liquid. The speed is given by the equation (Figure is given) where k is a constant that has no units. What is the value of n?
1 /2
1
3/2
2
Which row correctly describes the quantities momentum, power and temperature?
a
b
c
d
A girl throws a ball vertically upwards. It takes a time of 3.20 s to return to her hand. Assume air resistance is negligible. What is the initial speed with which the ball is thrown?
3.07 m s^–1
7.85 m s^–1
15.7 m s^–1
31.4 m s^–1
A radio-controlled toy car travels along a straight line for a time of 15 s. The variation with time t of the velocity v of the car is shown.
–1.5
0.0
4.0
4.5
The acceleration of free fall on Pluto is 0.66 m s^–2. An object weighs 6.0 N on Earth. What would this object weigh on Pluto?
0.40 N
0.93 N
4.0 N
39 N
Which force is caused by a difference in hydrostatic pressure?
friction
upthrust
viscous force
weight
Define power: work done/ (a)
......................... .................. is defined as the highest velocity attained by an object falling through a fluid
(a)
The .......... ............. is the upward force exerted on an object wholly or partly immersed in a fluid.
(a)
.............. .......... is proportional to the depth measured from the surface as the weight of the fluid increases when a downward force is applied.
(a)
Pascal's law: ''A change in pressure at any point in an enclosed incompressible fluid at rest is transmitted (a) and undiminished to all points in all directions throughout the fluid''
what is shown in the picture?
(a)
............. ............ is the distance between the two centers of two neighboring molecule
(a)
