Exam 1: Systems of Measurement

In doing a calculation,you arrive at an expression in which the numerator is in kilometers and the denominator is in meters per second.When the calculation is completed,the result will be in units of

If x and t represent position and time,respectively,the A in x = A cos Bt must

What is the order of magnitude of Earth's tallest mountain heights?

Two vectors and are added to give a resultant .The components of are A_x = -8.0 units and A_y = 6.0 units and the components of are B_x = 1.0 units and B_y = -1.0 units.The magnitude of vector is

The density of an object equals its mass divided by its volume.The mass of Earth is 6 $\times$ 10²⁴ kg and its radius is 4 $\times$ 10³ miles.The mass of the Sun is 2 $\times$ 10³³ g and its radius is 7 $\times$ 10⁵ km.Calculate the Earth's density divided by that of the Sun.

Estimate the number of raindrops needed to fill a volume of 1m $\times$ 1m $\times$ 1cm.

The net force acting on a body is defined to be the product of the mass of the body and its resultant acceleration.If the mass of a body is known to be 184 kg and its acceleration is measured to be 2.4 m/s²,the resultant force should be reported as

Which of the following prefixes does NOT represent a quantity larger than a single unit?

The number of seconds in a month is of the order of

The length of the vector = 5 + 12 is

Three vectors , ,and have the following x and y components: The angle that the resultant makes with the positive direction of the x axis is

Compute: (12 $\times$ 10⁶ - 2 $\times$ 10⁷)/ (-12 $\times$ 10⁷ + 7 $\times$ 10⁶)

Compute:

Which of the following is NOT one of the fundamental physical quantities in the SI system?

Given vector ,the vector 3

What angle does the vector = 3 - 4 + 5 make with the positive z axis?

The density of seawater was measured to be 1.07 g/cm³.This density in SI units is

If x and t represent position and time,respectively,the B in x = A cos Bt must

A diehard music lover still prefers to listen to his vinyl records,which rotate at 33 revolutions per minute.If he listens for an average of three hours per day,estimate the order of magnitude for the number of revolutions his turntable makes in a year.

The dimensions of mass density are