Name some devices we use to make measurements

Answer:

France

Explanation:

France is the undisputed champion in the world of skiing.

Answer:

1.D 2.A 3.A 4.B 5.C 6.A 7.A 8.A

Explanation:

Answer:

Question one is: kinetic energy

Question two is: tin

Question three is: zinc

Question four is: compression stroke

Question five is: second law of thermodynamics

Question six is: Convection

Question seven is: refrigerater

Explanation:

The next page called use vocabulary

the answers:

Question twenty three is: Heat engine

Question twenty four is: Thermodynamics

Question twenty five is: solar collector

Question twenty six is: specific heat capacity

Question twenty seven is: a conductor

Question twenty eight is: it's total energy increasing

Question thrity is: internal combustion engine

Question thrity one is: Exhaust stroke

Question thrity two is: plastic

Question thrity three: I don't know this one sorry!

Question thrity four is: Temperature

Question thrity five is: Heat

Hope his helps!!! <3

Answer:

Increase 9 times

Explanation:

Answer: An object weights 1000N on the earth's surface. ... Calculate its mass ... strength is 10 N/kg how many newtons does a 30kg object weigh.

Explanation:

Force of air and gravitational force are acting on the ball when launched from the slingshot.

When a ball is launched from a slingshot, during its travel force of air as well as gravitational force are acting on the ball because there is air which moves opposite to the motion of a ball whereas the force of gravity attracts the ball downward.

The force of air slows down the motion of the ball while on the other hand, the force of gravity brings the ball to the ground due to attraction. If these two forces are not present then the ball continues its motion forever so we can conclude that force of air and force of gravity are acting on the ball when launched from the slingshot.

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(a) The normal force on the sleigh is 596.36 N.

(b) The magnitude and direction of acceleration of the sleigh is 3.2 m/s² upwards.

The given parameters;

The normal force on the sleigh is calculated as follows;

[tex]F_n = mg \times cos(\theta)\\\\F_n = 63 \times 9.8 \times cos(15)\\\\F_n = 596.36 \ N[/tex]

The magnitude and direction of acceleration of the sleigh is calculated as follows;

[tex]\Sigma F= ma\\\\F - mgsin(\theta) - F_f = ma\\\\F - mgsin(\theta) - \mu F_n = ma\\\\510\ - \ 63 \times 9.8 \times sin15 \ -\ 0.25\times 596.36 = 63a\\\\201 .11 = 63a\\\\a = \frac{201.11}{63} \\\\a = 3.2 \ m/s^2 \ upwards[/tex]

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Answer:

Explanation:

The electromagnetic force, also called the Lorentz force, acts between charged particles, like negatively charged electrons and positively charged protons. Opposite charges attract one another, while like charges repel. The greater the charge, the greater the force.

Answer:

For example, an earthquake of magnitude 5.5 releases about 32 times as much energy as an earthquake measuring 4.5. Another way to look at this is that it takes about 900 magnitude 4.5 earthquakes to equal the energy released in a single 6.5 earthquake.

Explanation:

Temperature inversion leads to an increase in temperature as altitude increases.

The term temperature inversion refers to a situation in which a layer of warm air lies over a layer of cool air. This is also referred to as thermal inversion. This occurs when the air below to loose heat rapidly.

One of the effects of temperature inversion is reduction in visibility. So, thermal inversion leads to an increase in temperature as altitude increases.

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Answer:   Our notation is as follows : the mass of the original body is M=20.0kg ; its initial velocity is  

ν

0

​

=(200m/s)  

i

^

 ; the mass of one fragment is m  

1

​

=10.0kg ; its velocity is  

ν

1

​

=(100m/s)  

j

^

​

 ; the mass of the second fragment is m  

2

​

=4.0kg ; its velocity is  

ν

2

​

=(−500m/s)  

i

^

 ; and , the mass of the third fragment is m  

3

​

=6.00kg . Conservation of linear momentum requires  

          M  

ν

0

​

=m  

1

​

ν

1

​

m  

2

​

ν

2

​

+m  

3

​

ν

3

​

 .  

The energy released in the explosion is equal to ΔK , the change in kinetic energy .  

(a) Using the above momentum -conservation equation leads to  

ν

3

​

=  

m  

3

​

M  

ν

0

​

−m  

1

​

ν

1

​

−m  

2

​

ν

2

​

​

             =  

6.00kg

(20.0kg)(200m/s)  

i

^

−(10.0kg)(100m/s)  

j

^

​

−(4.0kg)(−500m/s)  

i

^

​

          =(1.00×10  

3

m/s)  

i

^

−(0.167×10  

3

m/s)  

j

^

​

.  

The magnitude of  

ν

3

​

 is  

                        ν  

3

​

=  

(1000m/s)  

2

+(−167m/s)  

2

​

=1.01×10  

3

m/s  

It points at θ=tan  

−1

(−167/1000)=−9.48  

∘

 (that is at 9.5  

∘

 measured clockwise from the +x axis) .  

(b) The energy released is ΔK :  

             ΔK=K  

f

​

−K  

i

​

=(  

2

1

​

m  

1

​

ν  

1

2

​

+  

2

1

​

m  

2

​

ν  

2

2

​

+  

2

1

​

m  

3

​

ν  

3

2

​

)−  

2

1

​

Mν  

0

2

​

=3.23×10  

6

J

Explanation:

this is my attachment answer hope it's helpful to you

Answer:

Sunspots are places where the strong magnetic fields in the Sun resist the upward motion of bubbling hot gases from underneath

Explanation:

It will be

[tex] {m/s}^{2} [/tex]

I am just explaining with the units only, because you want to know the accurate unit.

[tex] \frac{m/s}{s} \\ = \frac{m}{s} \times \frac{1}{s} \\ = \frac{m}{s \times s} \\ = \frac{m}{ {s}^{2} } \\ = {m/s}^{2} [/tex]

Hope you understood.

Do comment if you have any query.

Please find attached photographs for your answer.

Hope it helps.

Do comment if you have any query.

Answer:

C. 0.2 m/s west

Explanation:

Dont ever open the links that bots send you, it is a virus..Trust me, i speak from experience.......

Answer:

The power rating 100W means the bulb consumes electrical energy of 100 Joule per hour. Joule is the SI unit of energy. 1 Watt-hour is equal to 3600 Joules.

Answer:

[tex]W=Fd \\ 50 = 25d \\ d = \frac{50}{25} \\ \color{yellow} \boxed{d = 2m}[/tex]

Answer:

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question

mass = 1100 kg

acceleration = 0.5 m/s²

We have

force = 1100 × 0.5 = 550

We have the final answer as

Hope this helps you

Answer:

If your filling in the blank on edge then its 550

Explanation:

Silk,wool, DNA, cellulose and protein

Answer:

Having more plants performing photosynthesis could help reduce the amount of carbon dioxide in the atmosphere.

Explanation:

sample answer

The plants can be used in the future to help counteract some human

emissions they absorb carbon dioxide from the air and release oxygen.

It is a process carried out by photosynthetic autotrophic organisms, such as plants, algae and some prokaryotes. These organisms capture sunlight, convert it into chemical energy, which will be used to produce organic compounds, based on water and carbon dioxide.

Trees, like other plants, in the process called photosynthesis, absorb carbon dioxide from the air and release oxygen. They also make the air wetter and cooler. In this way, plants contribute to the good quality of the air we breathe.

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Explanation:

espero que re ayude esta información para tu pregunta

The number of heaters that can safely be operated in the circuit is 5 heaters.

From the question given above, the following data were obtained:

Power of heater = 300 W

Voltage (V) = 110 V

Current (I) = 15 A

Voltage (V) = 110 V

Current (I) = 15 A

P = IV

P = 15 × 110

Thus, the power that can be drawn from the circuit is 1650 W

Power of heater = 300 W

Power of Circuit = 1650 W

[tex]Number \: of \: heaters \: = \frac{power \: of \: circuit}{power \: of \: heater} \\ \\ = \frac{1650}{300} \\ \\ = 5.5[/tex]

From the calculation made above, the number of heaters that can be operated safely in the circuit is 5 heaters.

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Hi there!

[tex]\boxed{\text{Her angular velocity decreases.}}[/tex]

Recall the conservation of angular momentum:

[tex]L_i = L_f\\\\I_iw_i = I_fw_f[/tex]

When this person extends her arms, her moment of inertia increases.

According to the conservation of angular momentum, if the moment of inertia increases, the angular velocity must DECREASE.

Answer:

scientists often prefer to measure mass rather than weight because weight is affected by gravity while mass is not. Mass is always the same.

Explanation:

Weight is a force rather than a measure of the amount of matter something contains. The same amount of matter can have different weights depending on where it is. Mass directly measures the amount of matter present and remains the same no matter where it's measured.

This question involves the concepts of centripetal force and centripetal acceleration.

a) The centripetal acceleration for the piece of gum stuck to the outside edge of the record will be "6.67 m/s²".

b) The gum will have to overcome "0.033 N" centripetal force to remain stuck to the vinyl.

a)

The centripetal acceleration of the gum can be found using the following formula:

[tex]a_c=\frac{v^2}{r}[/tex]

where,

[tex]a_c[/tex] = centripetal acceleration = ?

v = linear speed of record = 1 m/s

r = radius of the record = [tex]\frac{diameter}{2}=\frac{0.3\ m}{2}=0.15\ m[/tex]

Therefore,

[tex]a_c=\frac{(1\ m/s)^2}{0.15\ m}\\\\a_c = 6.67\ m/s^2[/tex]

b)

Now, the centripetal force can be given as follows:

[tex]F_c=ma_c\\F_c=(0.005\ kg)(6.67\ m/s^2)\\F_c=0.033\ N[/tex]

Learn more about centripetal force here:

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The attached picture shows the centripetal force.

Answer:

6,000 minutes

Explanation:

To calculate distance u multiply speed and time or speed and rate

Answer:

15m²

8.6m²

lcm²

6000cm²

0.1km²

40cm²

5210 mm²

500m²

0.0087mm²

500cm²

Answer:

The water would rise because of displacement in the water

Explanation: