PHYSICS HIGH SCHOOL

What is the KE of a bird, mass 40g flying at 23m/s?​

Answers

Answer 1
Answer:

Answer:

230

Explanation:

You do Ke = kinetic times distance divide by mass

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What causes light to bend when it moves from one transparent medium to another?a change in amplitude

a change in color

a change in frequency

a change in speed

Answers

Answer: The correct answer is - change in speed.

When light travels from one transparent medium to another transparent medium, it bends and this phenomenon is known as refraction.

It is caused due to difference in the speed of light in different medium as speed of light is slow in a denser medium (like water) whereas speed is faster in a lighter medium (like air).



change in speed is the answer

a car travels 15 kilometers west in 10 minutes. after reaching the destination, the car travels back to the starting point, again taking 5 minutes. what is the average velocity of the car?

Answers

Velocity = (displacement) / (time)

'Displacement' is the distance between the start-point and end-point,
so the car's displacement is zero, and its average velocity is zero.

However,  Speed = (distance covered) / (time to cover the distance).

The car covered a distance of 30 km in 15 minutes,
so its average speed is

     (30km) / (0.25 hour)  =  120 km/hr.

'Velocity' is not simply a word you use for 'speed' when
you want to sound smarter.  They're two different things.

Which factors are used the calculate the kinetic energy of an object? Check all that apply. gravity velocity volume mass height

Answers

The factors that are included in the calculation of the kinetic energy of an object would be the velocity and its mass. The kinetic energy's formula is half of the product of the mass and the velocity that is squared. The volume, height, and gravity are not included.
Kinetic energy = (1/2) (the object's mass) (its speed or velocity)²  .

No other quantities are involved.

Ronnie kicks a playground ball with an initial velocity of 16 m/s at an angle of 40° relative to the ground. What is the approximate horizontal component of the initial velocity?

Answers

The horizontal component is calculated as:
Vhorizontal = V · cos(angle)

In your case Vhoriontal = 16 · cos(40) = 12.3 m/s

Answer: 12.3 m/s

The approximate horizontal component of the initial velocity is 12.3 m/s

What is projectile?

When an object is thrown at an angle from the horizontal direction, the object is said to be in projectile motion. The object which follows the projectile motion.

Given is Ronnie kicks a playground ball with an initial velocity of 16 m/s at an angle of 40° relative to the ground.

The horizontal component of the projectile is  

Vx= V cosθ

Substitute the values, we get

Vx  = 16 cos(40) =

Vx =12.3 m/s

Thus, approximate horizontal component of the initial velocity is 12.3 m/s.

Learn more about projectile.

brainly.com/question/11422992

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Planets in our solar system do not revolve around the sun in perfect circles. Their orbits are more like ovals that scientists describe as which of the following? A.
revolutionary
B.
rotational
C.
periodical
D.
elliptical

Answers

Their orbits are more like ovals that scientists describe as elliptical.

Orbit

It is a regular, repeating path, which one object in space takes around another one.

The comets, planets, asteroids, and other objects in the solar system orbit the Sun.

The majority of the objects orbiting the Sun move close or along to an imaginary flat surface. This imaginary surface is known as the ecliptic plane.

All the orbits are elliptical that shows that they are ellipse, identical to an oval.

The planets in the solar system do not revolve around the Sun in perfect circles, their orbits are more like ovals, which are illustrated by scientists as elliptical.

Thus, the correct answer is option D.

To know more about:

brainly.com/question/2513966
The correct answer of the given statement above would be option D. The planets in our solar system do not revolve around the run in perfect circles. And their orbits are more like of a shape of an oval in which it is described as elliptical. This is according to the Law of Orbits by Kepler.

Ninety-nine percent of all the matter that can be observed in the universe exists asA. gases.
B. plasmas.
C. liquids.
D. solids.

Answers

Answer:

B. plasma.  

Explanation:

There are four main states of matter:

1. solid

2. Liquid

3. Gas

4. Plasma

Plasma is a state in which 99% of all matter present in the universe exists. It is highly conducting ionized gas. The electric field and magnetic field dominate the behavior of plasma. Plasma is electrically neutral but the positive and negative particles are unbound.

Plasma is the most common state of matter in the universe.
Plasma, the most abundant phase in the universe...
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Which body is in equilibrium?(1) a satellite orbiting Earth in a circular orbit(2) a ball falling freely toward the surface ofEarth(3) a car moving with a constant speed along astraight, level road(4) a projectile at the highest point in its trajectory