IB PHYSICS SL GOHS SEMESTER 1: MEASUREMENT AND NEWTON’S LAWS
1.When a voltage V of 1
2.2 V is applied to a DC motor, the current I in the motor is 0.20 A. Which
one of the following is the output power VI of the motor given to the correct appropriate number of
significant digits?
A. 2 W
B. 2.4 W
C. 2.40 W
D. 2.44 W
(1)
2.The diagram below shows a boat that is about to cross a river in a direction perpendicular to the
bank at a speed of 0.8 ms–1. The current flows at 0.6 ms–1 in the direction shown.
Bank
0.8 ms
0.6 ms
Boat
Bank
The magnitude of the displacement of the boat 5 conds after leaving the bank is
A. 3 m.
B. 4 m.
C. 5 m.
D. 7 m.
(1)
3.Which one of the following units is a unit of energy?
A. eV大篆
B. Ws–1
C. Wm–1
D. Nms–1
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(1)
4.
Two forces of magnitudes 7 N and 5 N act at a point. Which one of the following is not a possible value for the magnitude of the resultant force? A. 1 N B. 3 N C. 5 N D.
7 Ntraveller
(1)
5.
Natalie measures the mass and speed of a glider. The percentage uncertainty in her measurement of the mass is 3% and in the measurement of the speed is 10%. Her calculated value of the kinetic energy of the glider will have an uncertainty of A. 30%. B. 23%. C. 13%. D. 10%.
(1)
6.
A student measures a distance veral times. The readings lie between 49.8 cm and 50.2 cm. This measurement is best recorded as A. 49.8 ± 0.2 cm. B. 49.8 ± 0.4 cm. C. 50.0 ± 0.2 cm. D. 50.0 ± 0.4 cm.
(1)
7.
The ratio atom
an of diameter nucleus
a of diameter is approximately equal to
A. 10–15.
B. 10–8.
C. 10–5.澎湃是什么意思
D. 10–2.
(1)
8.
The diameter of the nucleus of a hydrogen atom is of the order of
A. 10–8 m.
B. 10–15 m.
C. 10–23 m.
D. 10–30 m.
(1)
9.Which one of the following is a fundamental unit?
A. Coulomb
B. Ohm
C. Volt
D. Ampere
(1)
10.The resistive force F acting on a sphere of radius r moving at speed v through a liquid is given by
F = cvr
where c is a constant. Which of the following is a correct unit for c?
A. N
B. N s–1
C. N m2 s–1
D. N m–2 s
(1)
11.Which of the following is the best estimate, to one significant digit, of the quantity shown below?
()9.151.8
⨯
π
A. 1.5
B. 2.0
C. 5.8
D. 6.0
(1) 12.Which one of the following lists a fundamental unit and a derived unit?
(1) 13.Which one of the following contains three fundamental units?
A.
B.
C.
D.
(1)
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14. A ball, initially at rest, takes time t to fall through a vertical distance h. If air resistance is ignored,
the time taken for the ball to fall from rest through a vertical distance 9h is
A. 3t.
B. 5t.
C. 9t.
D. 10t.
(1)
15. A raindrop falling through air reaches a terminal velocity before hitting the ground. At terminal
velocity, the frictional force on the raindrop isquiksilver
计提所得税会计分录
A. zero.
score是什么意思B. less than the weight of the raindrop.
C. greater than the weight of the raindrop.
D. equal to the weight of the raindrop.
(1) 16.The diagram below shows the path of a projectile in the abnce of air resistance.
majeste
navigator是什么意思Vertical
position
Horizontal position
