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SCORPION-xisa [38]

3 years ago

10

PLEASE HURRY!!!!why does the temperature change?

1 answer:

svet-max [94.6K]3 years ago

6 0

Wind, radiation, and the sun are all factors that change the temperature.

Solar heating of the Earth's surface is uneven because land heats faster than water, and this causes air to warm, expand and rise over land while it cools and sinks over the cooler water surfaces.

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A racetrack curve has radius 70.0 m and is banked at an angle of 12.0 ∘. The coefficient of static friction between the tires an

zubka84 [21]

Answer:

See attachment below

Explanation:

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4 years ago

an athlete swims the distance from one end of a 50m pool to the other end in a time of 25 s what is The Athlete's average speed

vredina [299]

Answer:

2.5 N

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3 years ago

A rigid tank contains air at a pressure of 70 psia and a temperature of 55 ˚F. By how much will the pressure increase as the tem

Katyanochek1 [597]

Answer:

P_2 = 62.69 psi

Explanation:

given,

P₁ = 70 psia T₁ = 55° F = (55 + 459.67) R

P₂ = ? T₂ = 115° F = (115 + 459.67) R

we know,

p = ρ RT

ρ is the density which is constant

R is also constant

now,

$\dfrac{P_2}{P_1} =\dfrac{T_2}{T_1}$

$\dfrac{P_2}{70} =\dfrac{55+459.67}{115+459.67}$

P_2 = 62.69 psi

Hence, the increase in Pressure is equal to P_2 = 62.69 psi

7 0

3 years ago

A boat is able to move throught still water at 20m/s. It makes a round trip to a town 3.0km upstrea. If the river flows at 5m/s,

Kryger [21]

Answer:

t=320s

Explanation:

Given Data

Boat speed=20 m/s

River flows=5 m/s

Total trip of distance d=3.0km = 3000m

To find

Total time taken

Solution

As

$Velocity=distance/time\\time=distance/velocity\\$

Here we have two conditions

First when boat moves upward and the river pushing back.then velocity is given as

velocity=20m/s-5m/s

velocity=15 m/s

Time for that velocity

$t_{1} =distance/velocity\\t_{1}=\frac{3000m}{15m/s}\\ t_{1}=200s$

Now for second condition when river flows and boat speed on same direction

velocity=20m/s+5m/s

velocity=25 m/s

Time taken for that velocity

$t_{2}=distance/velocity\\t_{2}=\frac{3000m}{25m/s}\\ t_{2}=120m/s$

Now the total time

$t=t_{1}+t_{2}\\t=(200+120)s\\t=320s$

8 0

3 years ago

Calculate the answer to the correct number of significant digits. 105 + 62.4

givi [52]

Answer: 105

Explanation:

4 0

3 years ago

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