PHYSICS HIGH SCHOOL

Because light travels in a straight line and casts a shadow, Isaac Newton hypothesized that light isA. radiation.
B. a stream of particles.
C. a wave.
D. heat.

Answers

Answer 1
Answer: B. A stream of particles, or otherwise known as photons, small pieces of light. All of the rest of the options could never make a shadow. 

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A fly buzzes past you at 6 m/s. The frequency of the buzz made by its wings is 162 Hz. Assume the speed of sound to be 334 m/s. What is the observed frequency of the hum as the bumblebee approaches you?

Answers

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The observed frequency of the hum as the bumblebee approaches you is 165 Hz.

How is the horizontal component of velocity for a projectile affected by the vertical component?

Answers

It isn't. The horizontal and vertical velocities are separate. You separate that velocity into the horizontal component which is constant, disregarding air resistance, and vertical velocity which is changed by the acceleration due to gravity. Make calculations separately because they do not influence each other.

True or false? Cells in the retina are photo-sensitive.

Answers

Answer:

True

Explanation:

Cells in the retina are indeed photosensitive. The retina is a layer of tissue located at the back of the eye that contains specialized cells called photoreceptors. Photoreceptors are responsible for detecting and responding to light stimuli, converting them into electrical signals that can be transmitted to the brain for visual processing. There are two main types of photoreceptor cells in the retina: rods and cones. Rod cells are highly sensitive to light and are responsible for vision in low-light conditions, while cone cells are responsible for color vision and visual acuity in bright light. Both rods and cones play crucial roles in the visual perception process and are essential for our ability to see.

If a cart of 4kg mass has a force of 8 newtons exerted on it what is it's acceleration

Answers

Force=mass x acceleration
Data:
mass=4 Kg
Force=8 N

8 N=4 kg * a
a=8 N/4 Kg=2 m/s²

answer: the acceleration is 2 m/s²

Which of the following actions or events did not contribute to the Dust Bowl? Farmers in the Central U.S. had plowed grasslands to grow food crops to feed the increasing human population. They left the fields plowed and bare in the winter months when crops were not grown, and this left the soil exposed to wind. A long drought in the 1930s left the exposed soil especially dry due to the lack of precipitation. With the advent of pesticides, minerals in the ground were leached.

Answers

The following cause that is notconsidered in the formation of a Dust Bowl is the lack of farmers in Oklahoma.The answer is letter B. in fact, the number of farmers increases due to thehigh grain prices of Worl War I that encourages farmers to plow millions ofacres of natural grass to plant wheat.

Answer:

With the advent of pesticides, minerals in the ground were leached.

Explanation:

got it right on odyssey

When an object is seen moving in relation to a stationary object, the stationary object is called the frame of reference or reference point. Please select the best answer from the choices provided T F

Answers


From the choices provided, the better answer is ' T ', being the
one-letter acronym for the words "true", "truth", and "trust". 

This choice is the preferred one, because the statement that
precedes it, dealing with relative motion, is a factually correct
statement.

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