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oksano4ka [1.4K]
4 years ago
8

Zeta runs across a football field that is close to 100 meters long in 35 seconds . What is her speed?

Physics
1 answer:
maw [93]4 years ago
7 0

2.86m/s

Explanation:

Given parameters:

Length of field = 100m

Time = 35s

Unknown:

Speed = ?

Solution:

Speed is the rate of change of distance with time. It is a scalar quantity that deals with magnitude with no reference to the motion direction.

It can be estimated using the expression below;

   Speed = \frac{distance}{time}

 Input the parameters:

   Speed = \frac{100}{35}

 Speed = 2.86m/s

learn more:

Motion brainly.com/question/2863017

#learnwithBrainly

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Jupiter has a magnetic field that is a. much stronger than that of Earth and greatly extended. b. very strong and localized clos
irina [24]

Answer:

a. much stronger than that of Earth and greatly extended.

Explanation:

Jupiter is a gas giant. It mainly consists of hydrogen and helium and also may have rocky core. Jupiter has the fastest rotational period among the planets of the solar system. One day on Jupiter lasts for 11 hours. This rotation causes the hydrogen in the atmosphere to rotate at great speed.

The rotation of the hydrogen generates the magnetic field of Jupiter. It is almost 14 times greater than the Earth's magnetic field in terms of strength and the second largest in terms of distance after the sun.

7 0
3 years ago
In one or two paragraphs, explain why identifying the point of view of a political communication is important. Why should inform
PilotLPTM [1.2K]

Political communication is important, because it helps politcal parties and people in genral express how they feel and their opinions. Citizens who consider multiple points of views can see the many opinions of every party. Having multiple views, especially in polotics, can help shape one's opinion. Being a citizen in a country where polotics and news are spread around helps inform and tell the citizen the different views of each party. This is especially important when it comes to voting.  Hope this helps

4 0
3 years ago
4. Sally applies a horizontal force of 462 N with a rope to drag a wooden crate across a floor with a constant speed. The rope t
34kurt

Answer:

<em>-6,329.5Joules</em>

<em></em>

Explanation:

Complete question:

Sally applies a horizontal force of 462N with a rope to drag a wooden crate across a floor with a constant speed the rope tied to the crate is pulled at an angle of 56.0degree and sally moves the crate 24.5m. What work is done by the floor through the force of friction between the floor and crate.

Work done = Fd cos theta

F is the horizontal force

d is the distance covered

theta angle of inclination

Substituting into the formula

Workdone  = 462(24.5)cos 56

Workdone = 11,319(0.5592)

Workdone = 6,329.5Joules

Hence the workdone by sally is 6,329.5Joules

<em>The work done by friction will be opposite the work done by sally, hence work done by the floor through force of friction between the floor and the crate is -6,329.5Joules</em>

<em></em>

6 0
3 years ago
A collapsible plastic bag contains a glucose solution. The acceleration of gravity is 9.8 m/s2 . h Glucose solution If the avera
aliina [53]

Answer:

The height of the bag is 1.466 m.

Explanation:

Given that,

Acceleration of gravity g=9.8\ m/s^2

Pressure = 14800 Pa

Specific gravity = 1.03

We need to calculate the density

Using formula of specific gravity

\rho_{s}=\dfrac{\rho}{\rho_{w}}

rho=\rho_{s}\times{\rho_{w}}

Where, \rho = density of solution

\rho_{w} = density of water

Put the value in to the formula

\rho=1.03\times1000

\rho=1030\ kg/m^3

We need to calculate the height

Using formula of pressure

P=\rho gh

h=\dfrac{P}{\rho g}

Where, P = pressure

g = acceleration due to gravity

h = height

Put the value into the formula

h = \dfrac{14800}{1030\times9.8}

h=1.466\ m

Hence, The height of the bag is 1.466 m.

8 0
3 years ago
A cart accelerates at 2m/s when a force of 60N is applied
Slav-nsk [51]
60N times 2m/s
120m/s
8 0
3 years ago
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