Some hummingbirds beat their wings more than 50 times per second. A scientist is measuring the time it takes for a hummingbird to beat its wings once. Which fundamental unit should the scientist use to describe the measurement? Which factor of 10 is the scientist likely to use to describe the motion precisely? Identify the metric prefix that corresponds to this factor of 10.

Q: Which of the following equations are dimensiona consistent?

A: Given:- A.  v =at B. v = 12at2C. t = avD. v2= 2ax  v is the speed, t is time, and a is acceleration.…

Q: 1. From the figure shown below, (a) express all four vectors A, B,C,& D in unit vector notation (b)…

A:

Q: What is the speed of a car going v=1.000 mph in SI units? Notice that you will need to change miles…

A: As per the question, the speed of the car is v mph, we have to convert the speed of the car v in SI…

Q: A jet airplane reaches 863. km/h on a certain flight. What distance does it cover in 4.0 min? Set…

A: Given data The velocity of the jet airplane is given as v = 863 km/h. The time interval is given as…

Q: The following times are given in seconds. Use metric prefixes to rewrite them so the numerical value…

A: Useful information that will be used, is equivalent to is equivalent to

Q: Suppose your hair grows at the rate of ( 1)/(77) inch per day. Find the rate at which it grows in…

A:

Q: What SI unit is the most appropriate to use for the problem given below? A coin is dropped from the…

A: The given problem is based on the unit. We don't need to solve for height, we just need to find the…

Q: A human hair has a thickness of about 85 um. Part A What is this in meters? Express your answer…

A:

Q: cheetah was observed running at a speed of 27.4 m/s.  Use the following facts to convert this speed…

A:

Q: Using Excel to make a plot of the Position vs Time given in the following table.  The dependent…

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: 5.00 cars pass through an intersection each second. How many cars pass the intersection in 1.00…

A: In 1 year there are 365.25 days.  In 1 days there are 24 hours.  In 1 hours there are 60 minutes.…

Q: Part II. Significant Figures The significant figures in a number are all figures that are obtained…

A:

Q: kilometers

A: Time spent by John during driving= 2.5hr Average speed= 65 mph Total distance travelled by him can…

Q: Significant Figures: Complete the table below. Number 0.00300 925,592 720 0.00235 5.24 2500 Number…

A: Also, if the digit to be dropped in exactly 5, then we need to check the next digit. If the next…

Q: Mr. Alexander wants to know the height of a cliff he hiked up. He drops a rock down and it takes 5.5…

A: Time taken by the rock to hit the bottom is T = 5.5 sec Initial velocity of the rock is 0 as it is a…

Q: Find the following for path B in the figure, where the side length of each square block is l = 125…

A: Side of each square, l = 125 mTotal distance travelled for path B = ?

Q: The length of a table is measured as 99 ±1 cm, 90 t± 0.06 cm and 96 ±0.1 cm by students A, B and C.…

A: length of table, measured by A = 99±1 cm  length of table, measured by B = 90±0.06 cm  length of…

Q: Using Excel to make a plot of the Position vs Time given in the following table. The dependent…

A: The given table contains time and the corresponding position of a rock falling from a cliff whose…

Q: A runner travels 50 m over a duration of 13.3 s. She took 31 steps over the 50 m. What was her step…

A: Distance (d) = 50 m Time (t) = 13.3 s Total  number of steps to cover 50 m               distance is…

Q: By measurement you determine that sound waves are spreading out equally in all directions from a…

A: Intensity, I=260 W/m2  Distance from sourc, r=43.0 cm Time, t=5.5 ms   To determine energy emitted…

Q: Suppose the volume V of some object happens to depend on time t according to the equation V(t)= At3…

A: we know that the quantities having same dimension can only be added or substracted.

Q: 58. In the SI system the unit of force, the Newton, is a derived unit. True False 59. The meter,…

A:

Q: Statement translation. The distance s an object falls in time t equals the product of 16 and the…

A: Given S=distance the object falls t= time interval

Q: If the rotation of a planet of radius 4.42 x 10° m and free-fall acceleration .2 7.9 m/s increased…

A: Given : Radius (r) = 4.42 x 106 m Free-fall acceleration (a) = 7.9 m/s2

Q: The SI unit of force is the newton, derived from the base units by using the definition of force, F…

A: Given data The CGS unit of force is dyne. 1 dyne = 10-5 N   The expression for the force is written…

Q: Please help me with this question and explain how I can do it myself. thank you! In the following…

A: Solution:

Q: The Bay of Fundy in Nova Scotia, Canada is reported to have the largest tides in the world with high…

A:

Q: You find signs of an ancient civilisation and with some effort discover what the the base units for…

A:

Q: PROBLEM 3: Calculate the average speeds of object A and object B. Which object has the faster speed?…

A: as curve represents the relationship between distance traveled in time hence the slope of the line…

Q: Caleb left home and traveled toward the city A at an average speed of 61.3 km/h. Some time later,…

A: We are given,  Speed of Caleb  = 61.3 km/h Speed of Kim     = 47.4km/h    After travelling for 1.36…

Q: A spelunker is surveying a cave. She follows a passage 160 m straight west, then 230 m in a…

A:

Q: B) The force acting on an object is a function of time: F(t)= a t²+b/t, where tis time measured in…

A: Solution:   As per the given data,

Q: Which of the following equations has units of length? Take [x] = L (length), [m] = kg (mass), [t] =…

A: Since N = kg.m/s^2, So Unit of Ft^2 = N.s^2 = (kg.m/s^2)*s^2 = kg.m Unit of mx = kg.m Unit of Fx^2 =…

Q: The sides of a small rectangular box are measured to be (1.90 ± 0.01) cm, (2.00 ± 0.02) cm, and (3.1…

A: Given the measurements with uncertainties:Length (l):  (1.90±0.01) cmBreadth (b): (2.00±0.02)…

Q: If B is added to A, the result is 8.81 +3.0ĵ. If B is subtracted from A, the result is -4.61 +5.6).…

A:

Q: In the following calculations, be sure to express the answer in standard scientific notation with…

A: The following subtraction needs to be done:Let A=3.78×107 g- 4.701×105 gFirst we need to make the…

Q: Newton's law of universal gravitation can be expressed by the equation F = G  Mm r2, where F is the…

A: Write the expression for Newton’s law of universal gravitation. F=GMmr2G=Fr2Mm

Q: Suppose a machine is invented to measure the amount of knowledge in a student’s head in units called…

A: (a) The rate at which the student is gaining (or losing) knowledge as a function of time is :…

Units and Dimensions

These are generally defined as the terms which precede or describes the dimensions further. These are also further divided into two parts namely fundamental units and the derived units.