PHYSICS HIGH SCHOOL

Which of these causes summer in the northern hemisphere?The Sun is closer to Earth during the summer.

The northern hemisphere receives more direct sunlight during the summer.

Earth's northern axis is tilted away from the Sun during the summer.

The North Pole is tilted away from the Sun during the summer.

Answers

Answer 1
Answer:

Answer:

The northern hemisphere receives more direct sunlight during the summer.

Related Questions

The majority of visible stars are _____ stars.a. neutron b. red giant c. white dwarf d. main sequence
Please help, question is timed...
I need help ASAP.The average time that it takes for the car to travel the first 0.25m is_____The average time to travel just between 0.25m and 0.50m is_____Given the time taken to travel the second 0.25m section, the velocity would be____m/s
White light is shining on a green grape. The grape _____.absorbs green light reflects green light reflects all colors of light except green transmits green light
An object has a density of 20 g/cm 3 . When placed in a cylinder, it displaces 5 mL of water. What is the mass of the object?

If a grocery cart with a mass of 16.5 kg accelerates at +2.31 m/s2 against a frictional force of -15.0 N, what is the applied force?

Answers

Call the applied force 'A'. (Clever ?)

The forces on the cart are  'A' forward and 15 N backward.

The net force on the art is (A-15) forward.

F = m a

Net forward force = (mass of the cart) x (its forward acceleration)

(A - 15) = (16.5) x (2.31)

A - 15 = 38.115

Add 15 to each side:

A = 53.115 newtons
2th Law of Newton:

\vec{R}=m.a\n \n \vec{R}=\vec{F} -\vec{F_a}=m.a\n \n \vec{F}-15=16.5*2.31\n \n \vec{F}=38.115+15\n \n \boxed{\vec{F}=53.115 \ N}

A rotating satellite has the same angular velocity as the earth. If the satellite is 5x10^7 m from the center of the earth, what is its tangential velocity

Answers

We will want to be using radians for this question so that we can calculate arc lengths easily.

The angular velocity of the earth is 360^(o)/24\ hr=(2\pi)/(24\ hr)=(\pi)/(12)/hr

The satellite tangential velocity is the distance from the earth times the angular velocity, which is
5*10^(7)\ m*(\pi)/(12)/hr\approx1.309*10^(7)\ m/hr

For meters per second, we divide by the number of seconds in an hour, which is 3600:
1.309*10^(7)\ m/hr*(1\ hr)/(3600\ s)\approx3636\ m/s

Final answer:

The tangential velocity of a satellite, with the same angular velocity as the Earth and 5x10^7 m distance from Earth's center, is calculated to be approximately 3650 m/s.

Explanation:

The tangential velocity of a satellite is given by the formula v = rω, where 'v' is the tangential velocity, 'r' is the radius (distance from the center of the Earth to the satellite), and 'ω' is the angular velocity. The referenced satellite's angular velocity is the same as that of the Earth, which is approximately 7.292 x 10^-5 rad/s. Given r = 5x10^7 m (the satellite's distance from Earth), we input these values into the formula:

v = (5x10^7 m)(7.292 x 10^-5 rad/s)

Upon calculation, we find that the satellite's tangential velocity is approximately 3650 m/s.

Learn more about Tangential Velocity here:

brainly.com/question/33443064

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Modern fireplaces use a ____ to burn exhaust gases. boiler furnace radiator catalytic combustor

Answers

Modern fireplaces use a CATALYTIC COMBUSTOR to burn exhaust gases.

A catalytic combustor is an attachment which allows exhaust gases to be chemically broken down to release more energy. This is how it is applicable to modern fireplaces.

Answer:

catalytic combustor

Explanation:

The Royal Gorge bridge over the Arkansas River is 393 m above the river. A bungee jumper of mass 150 kg has an elastic cord of length 78 m attached to her feet. Assume the cord acts like a spring of force constant k. The jumper leaps, barely touches the water, and after numerous ups and downs comes to rest at a height h above the water. The acceleration of gravity is 9.81 m/s². Find h. Answer in units of m.

Answers

Answer:

188.7 m

Explanation:

height of bridge above water (h) = 393 m

mass of bungee jumper (m) = 150 kg

length of cord (L) = 78 m

acceleration due to gravity (g) = 9.8 m/s  

initial energy = mgh = 150 x 9.8 x 393 = 577,710 J

since the jumper barely touches the water, the maximum extension of the cord (x) = 393 - 78 = 315 m

from the conservation of energy mgh = ((1)/(2))kx^(2)

therefore

577,710 = ((1)/(2))kx315^(2)

k = 11.64 N/m

from Hooke's law, force (f) = kx' ⇒ mg = kx'

where x' is the extension of the cord when it comes to rest

150 x 9.8 = 11.64 × x'

x' = 126.3 m

the final height at which the cord comes to a rest = height of the bridge - length of the cord - extension of the cord when it comes to rest

the final height at which the cord comes to a rest = 393  - 78 - 126.3 = 188.7 m

Clouds, wind, and rain are part of the _____. stratosphere
thermosphere
troposphere
thermosphere

Answers

A its Stratosphere, Sorry I didn't see your answer, its bilogy I think not physics.. :)

Answer:

troposphere

Explanation:

One of your delivery trucks traveled 1,200 miles on 55 gallons of gas. How many miles per gallon did the truck get? (Round off your answer to the nearest hundredth.) A. 45.84
B. 21.81
C. 45.83
D. 21.82

Answers

The word "Per" means divide

"miles per gallon" is the same as "miles / gallon"

The truck went 1,200 miles
on 55 gallons

1,200 ÷ 55 = 21.81
Simply divide the two quantities to attain the correct unit.

1200 miles/55 gallons = 21.82 miles/gallon
The answer is D.
Other Questions
Which explains how the Coriolis effect causes air circulation? A. Air from the equator moves toward the poles slower than the ground below it, so friction causes the air to veer east. In contrast, air from the poles moves toward the equator faster than the ground below it, so friction causes it to veer to the west. B. Air from the equator moves toward the poles faster than the ground below it, so friction causes the air to veer west. In contrast, air from the poles moves toward the equator slower than the ground below it, so friction causes it to veer to the east. C. Air from the equator moves toward the poles faster than the ground below it, so friction causes the air to veer east. In contrast, air from the poles moves toward the equator slower than the ground below it, so friction causes it to veer to the west. D. Air from the poles moves toward the equator faster than the ground below it, so friction causes the air to veer east. In contrast, air from the equator moves toward the poles slower than the ground below it, so friction causes it to veer to the west.
During which changes of state do atoms that cannot move past one another become free to move?
How long would it take a sound wave from a car alarm to travel 1 km if the temperature is 0 degrees Celsius
The earth has a circumference of about 25000 miles. How is it expressed in scientific notation?