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3 years ago

Explain why dogs pant during hot summer days using the evaporation concept?

1 answer:

5 0

All, or almost all, warm-blooded creatures get rid of excess heat by evaporating moisture from their bodies. It's a great system, because evaporation takes a lot of heat. That's the reason people perspire when we're active and build up a lot of heat inside. The evaporation of sweat from our skin carries away heat with it. Dogs do not sweat on their skin. The only place they can evaporate moisture is through their mouth. Panting speeds up the evaporation by blowing air across the moisture.

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A train travelled from city a to city b. For the first 14hours,it travelled at an average speed of 120km/h. For the 10 hours, it

Nataly [62]

Explanation:

distance covered in the first part of journey : 120×14 = 1680km

distance covered in second part of journey :

90×10 = 900 km

total distance traveled : 1680+900 = 2580km.

total time taken to complete the journey : 14+10= 24 hrs.

therefore, the average speed of the journey = 2580km/24hr = 107.5 km/h.

hope this helps you.

4 0

2 years ago

Two long, straight wires, one above the other, are separated by a distance 2a and are parallel to the x-axis. Let the be in the

ivolga24 [154]

Answer:

field B = µ₀c I / 2πr

The field in the xy plane due to the fact that the two wires are perpendicular to the plane Bx and By are everywhere 0 on the plane.

a) Midway between, the Bz components cancel, so <0, 0, 0> T

b) Bz = µ₀ x I / 2πa + µ₀ x I / 2π(3a) = (µ₀ x I / 2π)(1/a + 1/3a)

Bz = (µ₀ x I / 2πr)(3/3a + 1/3a) = (µ₀x I / 2πr)(4 / 3a) = 2µ₀ x I / 3πa

c) By symmetry, Bz = -2µ₀ x I / 3πa (that is, down into the plane)

8 0

3 years ago

Identifying Characteristics of Solids

Karolina [17]

The solids whose particles occur in a definite pattern are called crystaline solids.

<h3>What is a crystalline solid?</h3>

The term crystalline solid has to do with the type of solid in which the atoms that components that make up the solid are all in definite positions and occur in a regular repeating pattern.

The particles of a solid are found in fixed positions. The solids whose particles occur in a definite pattern are called crystaline solids.

Learn more about crystalline solids:brainly.com/question/27657808

#SPJ1

3 0

2 years ago

Read 2 more answers

A Van Der Graaf generator is used to build up charges on the outside of a sphere. A belt is charged with electrons by rubbing ag

Nikolay [14]

Answer:

"When neutral objects are brought near the sphere, they are attracted to the sphere before they touch each other."

Explanation:

Charging by induction is said to occur when an uncharged object is brought near a charged body and it gets attracted towards it without even the two bodies touching.

The charged body polarizes the uncharged body. The charges shift to either sides and that causes the force of attraction between the two.

Suppose a negatively charged body is brought close to an uncharged body. The electrons of the body repel from the side near to the charged body and shift to the other end leaving behind positive ions.

The last line of the given paragraph indicates that charges can be moved by induction.

5 0

3 years ago

Read 2 more answers

1. Consider the position vs time graph at right.

Lemur [1.5K]

Answer:

Labor Day Weekend--No School

9/1/2021

Hello Students!

There will be no School on Friday Sept 3 and Monday Sept 6

All centers will be closed on Friday 9/3 and Monday 9/6

School will resume on TUESDAY, Sept 7

Enjoy your long weekend!

Explanation:

Labor Day Weekend--No School

9/1/2021

Hello Students!

There will be no School on Friday Sept 3 and Monday Sept 6

All centers will be closed on Friday 9/3 and Monday 9/6

School will resume on TUESDAY, Sept 7

Enjoy your long weekend!

5 0

3 years ago