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3 years ago

Pls help me with this question

Physics

1 answer:

ryzh [129]3 years ago

8 0

Answer:

16 ms2 is the answer for this question

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50 POINTS please someone answer me these questions and only if you know it please

Radda [10]

Which requires more energy, making soup or making toast? Explain.

➪ Making toast requires more energy according to my knowledge because soup is liquid and in liquids the particles move freely and allows heat to transfer more quickly in it. Thus, Soup is made quicker and hence requires less energy whereas a toast (piece of bread) is solid and particles are tightly packed thus they need more energy to get cooked.

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What are advantages of double glazed windows?

➪ Double glazed windows are air tight and are sealed properly. They cannot be broken easily which makes it more safe. Double glazed windows reduce the amount of moisture on your window panes, as the airtight seal prevents the condensation from building up. And no condensation means the house will be warmer.

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When poor people are forced to sleep outdoors in cold weather, they sometimes use newspapers for blankets. What good is this? Why?

➪ They use newspapers because they have very minute holes in it which have air trapped and that trapped air is bad conductor of heat which does not allow the heat of body to flow outside and keeps them warm.

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Why are loose fitting clothes more comfortable than the tight fitting clothes in hot climates?

➪ Loose-fitting clothes allow air to pass through and allows the heat of body to flow out which makes us feel cool whereas tight fitting clothes are touched with skin and does not allow the air to pass through the pores. Thus, making loose clothes more comfortable in hot climates.

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How does a thermos flask keep food hot?

➪ A thermos flask does not have any pores or holes in the outer surfacs or inner surface which creates a vaccum inside the flask and does not allow heat to escape. Hence, keeping the food hot for very long time.

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7 0

2 years ago

A space with an absolute pressure less than one atmosphere may be considered?

jenyasd209 [6]

It considered as Zero Gage pressure.

3 0

3 years ago

A block with a mass of 2kg is pushed 20cm and a constant speed up an incline that makes a 40 degree angle with the floor. how mu

Alexxx [7]

work done will be 2.5872 J

Given :

mass of block = 2kg

distance travelled by block = 20cm

angle of inclination = 40°

To Find :

Work done by gravity

Solution :

Gravity is defined as the force that attracts a body towards the earth or towards any other physical body having mass.

work done by gravity is mgh

If θ is the angle made when the body falls, the work done by gravity is given by,

W = m g h cosθ

W = 2 x 9.8 x 0.2 x cos40°

= 2.5872 J

So work done will be 2.5872 J

Learn more about Work done here:

brainly.com/question/25923373

#SPJ4

8 0

2 years ago

Question 4 of 20 : Select the best answer for the question. 4. Which of the following would lower the pitch of a string instru

Nady [450]

The correct option is B.
There are four basic factors which affect the properties of stringed instruments, these are frequency, diameter [thickness], tension and density.
Diameter refers to the thickness of the string. Thick strings with large diameter vibrate slower and thus they have lower frequency and lower pitch compared with thin strings.

4 0

3 years ago

What is the weight, in pounds, of a 185-kg object on jupiter? express the weight numerically in pounds?

strojnjashka [21]

Befroe showing a numercial answer, It is necessary to clarify that pounds is not a unit of weight. Pounds is a unit of mass.

Mass is a property of matter which indicates the amount of matter (atoms of certain kind) that the object has. The mass of an object does not change whenever the object changes of environment. It is the same in water, on the air, on Jupiter, the Earth, Venus, the Moon. Any where.

On the other hand, weight is the product of mass times the acceleration of gravity. Therefore, weight is different from mass and it changes depending on the place.

To find the mass in pounds of a 185 kg object, you have to make a conversion of units.

The conversion factor is 1 kg = 2.2046 pounds ⇒ 1 = 2.2046 pounds / kg.

Therefore, 185 kg = 185 kg × 2.2046 pounds / kg = 407.851 pounds = 407.851 lb ← this is the mass in pounds.

To find the weight you had to search for the gravitational acceleration in Jupiter and calcuate it with the formula weight = mass × acceleration of gravity.

You find the value for acceleration of gravity in Jupiter in internet as 24.79 m/s².

Weight = 185 kg × 24.79 /s² = 4,586 kg × m/ s² = 4,586 N.

There is a force unit in disuse called kiloponds. One kilopond equals 9.8 N. Hence, you can convert the weight 4,586 N to kiloponds in this way:

4,586 N × 1 kilopond / 9.8 N ≈ 468 kiloponds or 468,000 ponds ← weight

3 0

3 years ago

Pls help me with this question​

Pls help me with this question