Questions about Chapter 1: Measurement.
A solid cylinder of radius 4 cm and the length 8 cm is made of copper. If the density of copper is 8.93 g/cm**3, the mass of the cylinder is:
A. 2.32 kg
B. 3.59 kgC. 3.25 kg
D. 5.3 kgE. 8.94 kg
Question No: 2The period of a simple pendulum is given by the equation T**m = K*L(g**n), where T is in seconds, K is a dimensionless constant , L is in meters, and g is the acceleration due to gravity. If this equation is dimensionally correct, the values of m and n are:
A. m = 1, n = 1
B. m =1/2, n = -1/2
C. m = 2, n = - 1D. m = 1, n = 2
E. m = 0, n = 3
Newton's law of universal gravitation is given by F= G Mm/ r**2. Here F is the force of gravity, M and m are masses, and r is a length. Force has the units of kg.m/s**2. What are the SI units of the proportionality constant G.
B. m**2.kg/s**2C. m/kg**2.s**2
D. m**3.s**2/kg**2E. dimensionless
A physical quantity called pressure, P, is defined to be the force per units area I.e. P=F/A. Find the dimension of P.
A. M.L/(T**2)B. L/T**2
C. M.T/L**2D. L.T**2/M
A road sign indicates a speed limit of 100 km/h. Express this speed in m/s.
A. 30.2 m/s
B. 27.8 m/sC. 55.1 m/s
D. 10.4 m/sE. 60 m/s
Question No: 6
Assume that the atoms of a solid are spheres of diameter 1.0 * 10**(-10) m. Find the number of atoms in 1.0 mm**3 volume of the solid. Assume that the atoms are tightly packed.
A. 6.0 * 10**23
B. 1.9 * 10**21
C. 3.0 * 10**23
D. 2.8 * 10**24
E. 5.6 * 10**24