PHYSICS HIGH SCHOOL

Why are some consolation visible to New York State observers at midnight during April , but not visible at midnight during October

Answers

Answer 1
Answer: "Midnight" means looking away from the Sun. But in 6 months from April to October the earth goes halfway around the Sun. So midnight in April and midnight in October are exactly opposite directions.

Related Questions

How does an antenna’s receiving circuit select electromagnetic radio waves of a certain frequency and reject all others?
Which scientist first made a model of the atom called the plum pudding model?John DaltonJ.J. ThomsonErnest RutherfordNeils Bohr
A projectile was launched horizontally with a velocity of 468 m/s, 1.86 m above the ground. Calculate how long it would take for the projectile to hit the ground, to the nearest tenth of a second. Record your answer in the boxes below. Be sure to use the correct place value.
If NEPA charges 5k per kWh, what is the cost ofoperating for 24 hours a lamp requiring 1A on a200V line? A. 24K B. 55K C. 40K D. 26KE. 32K.
Identify which system of government is comprised primarily of two working parts?

A 250 gram ball at the end of a string is revolving uniformly in a circle of radius 0.75 meters.The ball makes 2.0 revolutions per second. What is the centripetal acceleration?

Answers

The centripetal acceleration of the ball would be 88.44 m/s^2.

Centripetal acceleration

The centripetal acceleration (ac) of an object moving in a circle at a constant speed is given by the formula:

ac = (v^2) / r

where v is the speed of the object and r is the radius of the circle.

In this case, the ball is revolving uniformly in a circle of radius 0.75 meters, and it makes 2.0 revolutions per second. To find the speed of the ball (v), we need to convert the number of revolutions per second to the angular velocity (ω) in radians per second:

ω = 2π x (number of revolutions per second)

ω = 2π x 2.0 = 4π radians per second

The speed of the ball (v) is then given by:

  • v = ω x r
  • v = (4π rad/s) x 0.75 m = 3π m/s

Now we can calculate the centripetal acceleration (ac) of the ball:

  • ac = (v^2) / r
  • ac = [(3π m/s)^2] / 0.75 m
  • ac = 9π^2 m/s^2 ≈ 88.44 m/s^2

Therefore, the centripetal acceleration of the ball is approximately 88.44 m/s^2.

More on centripetal acceleration can be found here: brainly.com/question/1052267

#SPJ1

The diagram shows a swinging pendulum.Which best explains what happens to the motion of the pendulum?

A. The mechanical energy transforms to thermal energy as the pendulum slows and eventually stops moving.

B. The mechanical energy disappears as the pendulum slows and eventually stops moving.

C. The pendulum will continue moving at the same speed until someone stops it because energy cannot be destroyed.

D. The pendulum will slow down but will never stop moving because energy cannot be destroyed.

Answers

The correct answer is

A. The mechanical energy transforms to thermal energy as the pendulum slows and eventually stops moving.

In fact, we must keep in mind the presence of the air, which causes some resistance to the motion of the pendulum. As the pendulum moves through the air, part of its mechanical energy is transferred to the molecules of air because of the friction of this molecules with the surface of the pendulum. As a result, the pendulum slows down, and eventually stops. The initial energy of the pendulum has been converted into thermal energy of the molecules of air, which move faster now.

Answer:

The guy above is correct it's A

If you had two forces, one with a magnitude of 25 N and the the other with a magnitude of 100 N, what would be the maximum net force these forces could exert on an object?

Answers


The maximum occurs when both of those forces push on an object
in the same direction.  Then, the net force on the object is 125 N.
One of the things he was bothered by was the long-held belief of Aristotle thatobjects, including the Earth, naturally come to rest unlessthey are forced to move byan external force(the motion of the other planets was considered special– they had theproperty ofquintessenceso that their natural state was to move in circles). One thingthat bothered Copernicus is that nobody could imagine a force large enough to keep theEarth moving around the Sun. Galileo and Newton understood that objects had inertia–that they tended to keep moving in a straight line at constantspeed (or sit still) unlessacted on by an external force– in the cases of objects ‘naturally’ coming to rest, frictionwas identified as the responsible force. So for the Earth, there doesn’t need to be anexternal force to keep it moving, just so long as it isn’t being affected by friction. As wewill learn in subsequent chapters, gravity is what keeps theEarth moving in an ellipsearound the Sun rather than just moving through space in a straight line.

What type of reaction occurs in the cores of stars to create their tremendous amounts of energy?a. fusion
b. fission
c. physical
d. chemical

Answers

The correct answer is A.

According to the periodic table, the average atomic mass of helium is A) 2 amu. B) 2.0026 amu. C) 4.0026 amu. D) 6.0026 amu.

Answers

Answer:

C) 4.0026 amu

Explanation:

Helium (He) is the 2nd element on the Periodic Table.

It's neutral atom has 2 protons and 2 electrons.

It is in the 1st period and the 18th row.

It is also a Noble gas.

a long wire carries a current toward the north in a magnetic field that is directed vertically downward. what is the direction of the magnetic force on the wire?

Answers

The magnetic force on the wire will be directed to the east.

The direction of the magnetic force on the long wire carrying a current toward the north in a magnetic field directed vertically downward would be to the east.

This is because of the right-hand rule, where if you point your right thumb in the direction of the current and your fingers in the direction of the magnetic field, the resulting force would be perpendicular to both, pointing to the east in this case.
When a long wire carries a current toward the north in a magnetic field that is directed vertically downward, you can determine the direction of the magnetic force on the wire using the right-hand rule.

Step 1: Point your right thumb in the direction of the current (north).
Step 2: Curl your fingers in the direction of the magnetic field (downward).
Step 3: The direction of the force on the wire will be the direction your palm is facing.

Following these steps, the magnetic force on the wire will be directed to the east.

To know more about current refer brainly.com/question/13055827

#SPJ11
Other Questions
Why does a vibraing simple pendulum not produce any sound
A golf club with 65J of kinetic energy strikes a stationary golf ball with a mass of 46g. The energy transfer is only 20% efficient. Calculate the initial speed of the golf ball
what is the difference in the charges on a balloon rubbed in your hair and a glass  rod rubbed with silk? why?
A nurse applies a horizontal force of 147 N on a bed that has a mass of 152 kg,The magnitude of the normal force acting on the bed is .967 N5.00 N1440 N1490 N