explain 3points to be taken into consideration while measuring the length of a body​

Answer:

Explanation:

ASSUMING the defender at 5 m is NOT the goalie.

the ball horizontal velocity is 5 m/0.5 s = 10 m/s

The goalie, presumably at the goal line, has 15 m / 10 m/s = 1.5 s to react and move to the ball position.

Must be little league soccer as 10 m/s is a rather wimpy soccer ball speed.

Answer:

Explanation:

True

Answer:

The independent variable is that entered by the researcher - it does not depend on anything else in the equation

The dependent variable is the result obtained by applying the equation to the independent variable

One variable is entered by the researcher giving rise to the second variable.

In the study given the intensity depends on the average water temperature.

The independent variable is the water temperature and the dependent variable is the maximum strength of the hurricane

In scientific research processes there are several types of variables

 * Those that can be controlled or manipulated by researchers, these are called independient variable  

* The variables that are measured in the investigation are called dependent variables, these are influenced by the values ​​of the independent and intervening variables

* There is a third type of variable called intervening that affect the results but cannot be identified or controlled by the researchers.

Based on this definition for this case the independent variable must be temperature, even though the researcher cannot control it directly, he can measure its value.

The dependent variable is the intensity or maximum strength and the number of hurricanes that can be measured by the researcher and create a relationship between the intensity as a function of the gulf water temperature.

To learn more about the dependent and independent variables see: brainly.com/question/14501374

Answer:

Sin = Sine

Cos = Cosine

Explanation:

Sin(θ) = Opposite/Hypotenuse

Cos(θ) = Adjacent/Hypotenuse

Answer:

C. 8I.

Explanation:

As moment of inertia for a bar is proportional to the product of its mass and the square of its length, doubling the mass will double the moment of inertia. Doubling the length will quadruple the moment of inertia. Doing both will make the moment of inertia 2(4) = 8 times larger

Change in velocity per unit time.

Explanation

Acceleration is defined as rate of change of velocity w.r.t time.

[tex]\boxed{\sf Acceleration=\dfrac{dv}{dt}}[/tex]

Answer:

Hello,

The combustion of biomass can replace fossil fuels in conventional power plants, which is true.

I hope I helped you :)

Answer:

In physics, a transverse wave is a wave whose oscillation is perpendicular to the direction of propagation of the wave.

hope that helped.

In a transverse wave, the wiggles are up and down.

In a longitudinal wave, the wiggles are back and forth.

1 km = 1000 meters

2,560 meters / 1000 = 2.56 km

30 seconds is 1/2 minute

2.56 km x 2 = 5.12 km per minute

1 hour = 60 minutes

5.12 x 60 = 307.2 km per hour

Answer: 307.2 km per hour

Answer:

-5.5m/s^2

Explanation:

Well first of all, we know that velocity is a vector, therefore acceleration is a vector. And since urkar is slowing down, the acceleration will be negative

V1 = 11m/s

V2 = 0m/s ( bcuz they said to a stop)

t = 2s

a = V2 - v1

- - - - - - - - - -

t

a = 0 - 11

- - - - - - -

2

= - 5.5ms^-2

Answer:

Hello! Your answer is BELOW.

Explanation:

Outside 45 degrees

35 degrees inside

Hope I helped Hope you make an 100%

-Amelia♥

The velocity of the car at the end of the initial 1.70-second interval is 25.6 m/s  

Let's evaluate every step

1. Step 1

[tex]v_{i}_{1}[/tex]: initial velocity at step 1 = 30.6 m/s

[tex]v_{f}_{1}[/tex]: final velocity at step 1

[tex]t_{1}[/tex]: time at step 1 = 1.70 s

[tex]a_{1}[/tex]: average acceleration at step 1

The average acceleration in this step is given by:

[tex] a_{1} = \frac{v_{f_{1}} - v_{i_{1}}}{t_{1}} [/tex]   (1)      

2. Step 2

[tex]v_{i}_{2}[/tex]: initial velocity of step 2 = [tex]v_{f}_{1}[/tex]

[tex]v_{f}_{2}[/tex]: final velocity at step 2    

[tex]t_{2}[/tex]: time at step 2 = 4.56 s

[tex]a_{2}[/tex]: average acceleration at step 2

The average acceleration is the following:

[tex] a_{2} = \frac{v_{f_{2}} - v_{i_{2}}}{t_{2}} [/tex]   (2)            

3. Step 3          

This step is given by the sum of step 1 and step 2

[tex]v_{f}[/tex]: final velocity after 6.26 s = 17.0 m/s = [tex]v_{f}_{2}[/tex]

t = t₁ + t₂ = 1.70 s + 4.56 s = 6.26 s  

The ratio of the average acceleration is:

[tex] \frac{a_{1}}{a_{2}} = 1.55 [/tex]  (3)

By dividing equation (1) into equation (2) we have:

[tex] \frac{a_{1}}{a_{2}} = \frac{\frac{v_{f_{1}} - v_{i_{1}}}{t_{1}}}{\frac{v_{f_{2}} - v_{i_{2}}}{t_{2}}} [/tex]

[tex] \frac{a_{1}}{a_{2}} = \frac{t_{2}(v_{f_{1}} - v_{i_{1}})}{t_{1}(v_{f_{2}} - v_{f_{1}})} [/tex]                

By solving the above equation for [tex]v_{f_{1}}[/tex] we have:

[tex]v_{f_{1}} = \frac{\frac{a_{1}}{a_{2}}v_{f_{2}}t_{1} + v_{i_{1}}t_{2}}{\frac{a_{1}}{a_{2}}t_{1} + t_{2}} = \frac{1.55*17.0 m/s*1.70 s + 30.6 m/s*4.56 s}{1.55*1.70 s + 4.56 s} = 25.6 m/s[/tex]

Therefore, the velocity of the car at the end of the initial 1.70-second interval is 25.6 m/s.  

You can see another example of average acceleration here: https://brainly.com/question/17050461?referrer=searchResults          

I hope it helps you!

Answer:

Magnetic flux has formular: BA while Magnetic flux linkage has formula: NBA

Explanation:

N is number of turns of a coil

B is magnetic flux density across the coil

A is area of coil

[tex].[/tex]

Answer:

a fad diet is basically a diet that was a trend or that was popular for a short amount of time and makes unreasonable claims for fast and very much wanted results

Explanation:

your question:

P= 2/3(N/V)1/2mv^2 Solve for v

answer:

v=√2Vem

Answer:

moon gravity is about one sixth of earth gravity

W = 10(9.8/6) = 16 N

The idea that "students ' immune systems have declined due to the use of hand sanitizers " is a hypothesis.

The term hypothesis refers to an intelligent guess or idea often based which is subject to scientific investigation via experiments.

A hypothesis may be right or wrong. We can only prove a hypothesis by subjecting it to a series of rigorous experiments.

Thus Collette's idea is a hypothesis.

Learn more: https://brainly.com/question/18284466

Answer:

a) kinetic energy = 130.2j

b) angular velocity when kinetic energy is doubled = 21.2rad/s

The size of your container in cubic meters is 0.1981.

Given the following data;

In this exercise, you're required to convert the size of a 7 cubic foot container filled with mercury to cubic meters. Thus, we would convert the given size of the container in cubic foot to cubic meters.

Conversion:

1 cubic foot = 0.0283 cubic meter

7 cubic foot = X cubic meter

Cross-multiplying, we have;

X = [tex]0.0283[/tex] × [tex]7[/tex]

X = 0.1981 cubic meter.

Therefore, the size of your container in cubic meters is 0.1981.

Find more information: https://brainly.com/question/17543591

A. The S.I unit of mass is kg . therefore we have to convert 4000g into kg from gram

i.e 4000g = 4 kg

B. The S.I unit of length is meter. so we have to convert 2.4 km into meters,

i.e 2.4 km = 2400 m

#A

[tex]\boxed{\sf 1kg=1000g}[/tex]

[tex]\\ \sf\longmapsto 4000[/tex]

[tex]\\ \sf\longmapsto \dfrac{4000}{1000}[/tex]

[tex]\\ \sf\longmapsto 4kg[/tex]

#B

[tex]\boxed{\sf 1km=1000m}[/tex]

[tex]\\ \sf\longmapsto 2.4km=2.4(1000)[/tex]

[tex]\\ \sf\longmapsto 2400m[/tex]

Answer:

Explanation:

A) Hg is mercury, a metal that is mostly liquid at STP (Standard Temp and Pressure), though some small portion of it will be gaseous in a closed container.

B) CH Methylidyne radical is a gas

It is not a stable compound because carbon has four valence electrons and only one of those is kept occupied by the hydrogen atom.

If this is supposed to be CH₄ which is methane, then also a gas at STP

C) C₂H₅OH is ethanol which is mostly a liquid at STP, though some small portion of it will be gaseous in a closed container.

D) H₂O is water and will be mostly liquid at STP, though some small portion of it will be gaseous in a closed container.

CH₄ methane is the substance that is a gas a room temperature and atmospheric pressure, therefor the correct answer is option B.

Anything which has mass and occupies space is known as matter, mainly there are four states of matter solid liquid gas, and plasma.

These different states of matter have different characteristics according to which they vary their volume and shape.

Hg is liquid at room temperature

CH₄ methane is gas at room temperature

C2H5OH is liquid at room temperature

H20 is liquid at room temperature

CH₄ methane is the substance that is a gas a room temperature and atmospheric pressure, therefor the correct answer is option B.

To learn more about the matter here, refer to the link;

brainly.com/question/9402776

#SPJ2

Your question seems incomplete the complete question should be ,

Which substance is a gas at room temperature and atmospheric pressure?

A. Hg

B. CH₄

C. C2H5OH

D. H20

Answer:

117.06 A

Explanation:

V = IR

2650 = 66(R)

2650/66 = R

40.15 = R

V = IR

4700 = I(40.15)

4700/40.15 = I

117.06 = I

The branch of physics that defines motion with respect to space and time, ignoring the cause of that motion, is known as kinematics. Kinematic equations are a set of equations that can derive an unknown aspect of the motion of a body if the other aspects are provided.

Answer:

The cooler air from region of up to 30degree latitude belt on both sides of the equator ,rushes toward the equator ,to take the place of warm rising air. This makes the wind to blow from north and south direction toward equators

Answer:

Explanation:

For the typical greyhound race we have that:

a) The acceleration of the dog for each section is:

b) The time taken for the entire trip is 7.5 s.

a) Let's calculate the greyhound's acceleration for each section:

[tex] a = \frac{v_{f}^{2} - v_{0}^{2}}{2\Delta d} [/tex]   (1)

Where:

a: is the acceleration =?

[tex]v_{f}[/tex]: is the final velocity = 20 m/s

[tex]v_{0}[/tex]: is the initial velocity = 0 (the dog starts from rest)

Δd: is the change in distance = 30 m - 0 m = 30 m

Then, the acceleration is:

[tex] a = \frac{v_{f}^{2} - v_{0}^{2}}{2d} = \frac{(20 m/s)^{2}}{2*30 m} = 6.67 m/s^{2} [/tex]  

Since the dog maintains a velocity of 20 m/s up to 80 m, the acceleration is zero. The initial and final velocity is the same, so the acceleration in eq (1) is 0.      

In this stage, the dog slowed down to stop at 100 m. This means that the final speed is 0.

We have:

[tex]v_{f}[/tex] = 0 (the dog stops)

[tex]v_{0}[/tex] = 20 m/s (the dog maintained this velocity up to 80 m)

Δd = 100 m - 80 m = 20 m

Hence, the acceleration is (eq 1):

[tex] a = \frac{0 - (20 m/s)^{2}}{2*20 m} = -10 m/s^{2} [/tex]

The minus sign means that the dog is decelerating in the final section.

b) The time taken for the entire trip can be calculated as follows:

[tex] t = t_{0-30} + t_{30-80} + t_{80-100} [/tex]  (2)

Hence, the time of each stage is:

The time can be found with the following equation:

[tex] t_{0-30} = \frac{v_{f} - v_{0}}{a} = \frac{20 m/s}{6.67 m/s^{2}} = 3.00 s [/tex]

Since the acceleration is 0, the time can be calculated with the next kinematic equation:

[tex] \Delta d = v_{0}t - \frac{1}{2}at^{2} [/tex]

[tex] t_{30-80} = \frac{d_{f} - d_{i}}{v_{0}} = \frac{80 m - 30 m}{20 m/s} = 2.5 s [/tex]

The time is:

[tex] t_{80-100} = \frac{v_{f} - v_{0}}{a} = \frac{0 - 20 m/s}{-10 m/s^{2}} = 2.00 s [/tex]

Therefore, the time taken for the entire trip is (eq 2):

[tex] t = t_{0-30} + t_{30-80} + t_{80-100} = 3.00 s + 2.5 s + 2.00 s = 7.5 s [/tex]                  

You can find another example of calculation of acceleration here: https://brainly.com/question/19867449?referrer=searchResults              

I hope it helps you!

Answer:

[tex]thank \: you[/tex]