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Marysya12 [62]
4 years ago
13

The following measurements are ranked from largest to smallest: 11.6 mg, 1021 µg, 0.000006 kg, 0.31 mg.

Physics
1 answer:
Fynjy0 [20]4 years ago
7 0

Answer 4:  False

Explanation:  

The following measurement given above (11.6 mg, 1021 µg, and 0.000006 kg, 0.31 mg) is a false statement. Henceforth the right configuration of rank from biggest to littlest are 11.6 mg, 0.000006 kg, 1021 µg, and 0.31 mg. Since 11.6 mg = 11.6 mg, 0.000006 kg = 6 mg, 1021 µg = 1.021 mg, and 0.31 mg = 0.31 mg. Therefore regarding to the converted measurement (mg) the above given ranking was False. And the correct ranking (11.6 mg, 0.000006 kg, 1021 µg, and 0.31 mg) is valid.

Answer 5:  1 micrometer (1 µm) equals to 10-6 m

Explanation:

One micrometer (1 µm) additionally called a micron, is equivalent to 0.000001 (10-6) m. A measurement prefix is a unit prefix that goes before an essential unit of measure to demonstrate a various or division of the unit. Each prefix has its own unit image. Power of-10 prefix multipliers encourage the induction of other, regularly increasing convenient, distance units from the meter. As such one nanometer (nm) is equivalent to 10-9 m. One Angstrom unit (symbolized Ä) is equivalent to 10-10 m, or 0.1 nm.

Answer 6:   5 is the significant digits in the measurement of 34.000 m.

Explanation:  

Significant figures are the digits of a number that are important as far as exactness or accuracy. There are three principles on deciding how many significant figures are in a number: Non-zero digits are constantly critical. A last zero or trailing zeros in the decimal part just are significant. Whereas the three most regular base units in the decimal measuring standard are the meter, gram, and liter.

Answer 7:   milli

Explanation:  

milli-(m) is a unit prefix in the decimal measuring standard by a factor of one thousandth, which is (10−3). The metric prefix implies one thousand (1,000) since 1000 milli makes one meter. So from the given estimations, milli is the littler prefix. This prefix was proposed in "1793 and received in 1795", the prefix originates from the Latin mille, signifying "one thousand" (the Latin plural is milia). And also the prefix is a piece of the International System of Units (SI).

Answer 8:   True

Explanation:  

All estimations have a level of uncertainty paying to exactness and precision. This is brought about by two factors, the impediment of the estimating instrument (deliberate blunder) and the ability of the experimenter making the estimations (arbitrary mistake). However, estimation uncertainty is a parameter that is regularly ignored. It is a significant part of the estimation that influences quality, costs, choices, and dangers.  

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worty [1.4K]

We have that The ratio U1/U2 of their potential energies due to their interactions with Q is

  • U1/U2=6
  • U1/U2=6

From the question we are told that

Question 1

Charge q1 is distance r from a positive point charge Q.

Question 2

Charge q2=q1/3 is distance 2r from Q.

Charge q1 is distance s from the negative plate of a parallel-plate capacitor.

Charge q2=q1/3 is distance 2s from the negative plate.

Generally the equation for the potential energy  is mathematically given as

U=\frac{-k*qQ}{r}

Therefore

The Equations of U1 and U2 is

For U1

U1=\frac{-k*q_1Q}{r}

For U2

U2=\frac{-k*q_1Q}{3*2r}

Since

U is a function of q and  q2=q1/3

Therefore

U1/U2=6

For Question 2

For U1

U1=\frac{-k*q_1Q}{s}\\\\For U2\\\\U2=\frac{-k*q_1Q}{3*2r}

Therefore

U1/U2=6

For more information on this visit

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7 0
3 years ago
A city bus travels 6 blocks east and 8 blocks north. Each block is 100 m long. If the bus travels this distance in 15 minutes, w
nexus9112 [7]

Answer:

The average speed of the bus, v = 1.55 m/s

Explanation:

Given that,

Number of blocks traveled by bus towards east = 6

Number of blocks traveled by bus towards north = 8

Length of each block = 100 m

Distance traveled by bus towards east 6 x 100 = 600 m

Distance traveled by bus towards north 8 x 100 = 800 m

The total distance traveled, d = 600 + 800 = 1400

Time taken by the bus to travel is, t = 15 minutes

The velocity is given by the formula

                                  v = d/t  m

Substituting the values in the above equation

                                   v = 1400 m /(15 x 60) s

                                      = 1.55 m/s

Hence, the average speed of the bus, v = 1.55 m/s

6 0
3 years ago
On a frozen pond, a 10.3 kg sled is given a kick that imparts to it an initial speed of vo = 1.64 m/s. The coefficient of kineti
alukav5142 [94]

Answer:

d=1.07m

Explanation:

Calculate Initial Kinetic Energy:

KE = 1/2*m*v^2

KE= 0.5*(10.3kg)*(1.64m/s)^2 = 13.85J

Calculate work overcoming friction:

W = F*d = mu*m*g*d

W = (0.128)*(10.3kg)*9.80m/s^2)*d

W = 12.92*d

Equate the two since all of the kinetic energy is used up in working against friction:

W = KE

12.92d = 13.851J

Solve for d:

d= (13.851J)/(12.92) = 1.07 m

5 0
4 years ago
Two satellites orbit the Earth in circular orbits of the same radius. One satellite is twice as massive as the other. Which stat
loris [4]

To solve this problem it is necessary to apply the concepts related to the orbital velocity of a satellite on earth.

This concept is expressed in the equation,

v = \sqrt{\frac{Gm_E}{r}}

Where,

G = Universal Gravitational constant

m_E = Mass of the Earth

Therefore the ratio of the velocity from two satellites is,

\frac{v_1}{v_2} = \sqrt{\frac{r_2}{r_1}}

The ratio between the two satellites is the same, then

\frac{v_1}{v_2} = \sqrt{\frac{r}{r}}

\frac{v_1}{v_2} = 1

v_1 =v_2

Therefore the correct option is B.

4 0
4 years ago
What is the car’s average velocity (in m/s) in interval between t=1.0s to t=1.5s?
Lemur [1.5K]

Answer:

This question is incomplete

Explanation:

This question is incomplete. However, the formula for velocity is;

Velocity (in m/s) = distance/time

The distance the car covered in the completed question is divided by the difference in the time interval

The difference in the time interval will be = 1.5s - 1.0s = 0.5s

NOTE: the distance must be in meters or be converted to meters

7 0
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