التدريب الثاني على الامتحان التجريبي لمادة | Physics

Which one of the following pairs comprises two SI base units?

……………….. is used in manufacturing the standard meter?

If the radius of a virus is 5.1 nm, then the diameter of the virus equals……

a) 10.2× 10^-3 m

b) 10.2× 10^-7 mm

c) 10.2× 10^-8 m

d) All the previous

A rectangle has side lengths of 0.02 m and 0.004 m . Calculate the area of the rectangle

a)80 mm²

b) 8 μm²

c)80 mm²

d) 8 nm²

If the kinetic energy of a body is given by the relation mv² (m is the mass,v is the velocity )then its dimensional formula is ……..

a) ML²T²

b) ML T²

c) ML^-2T^-2

d) ML²T^-2

The hydrometer is used for measuring

The best way to judge the accuracy of measurement is through……..

If M = M1 + M2, M = (100 ± 5) Kg, real value of M1 = 40 kg, r (of M2) = 0.04, M1  =………….

By using the dimensional formula of physical quantities, if

X F = m a²   (Knowing that: (F) is the force, (m) is the mass, (a) is the acceleration) then dimension of  X

a) LT^-4

b) LT^-3 

c) LT^-4

 d) LT^-2

Which list of quantities contains only scalar quantities?

The distance he moved equals ……..

The displacement of the athlete is ……

For the resultant of two vectors to be maximum, the angle between them must be…….

A small air craft had departed the airport. After a while, the pilot reported the airport tower that the craft is at 215 km away in a Northern East direction that makes an angle 22° to East. How far the craft was from the tower; to the East and to the North?

The scalar product of two vectors becomes maximum when the angle between them is ………….