Answer:
called optically transparent.
Explanation:
Photons interact with an object by some combination of reflection, absorption and transmission. Some materials, such as plate glass and clean water, transmit much of the light that falls on them and reflect little of it; such materials are
Please answer a and b it’s due today
Answer:
A: 10 kilometers per hour
B: 4 kilometers per minute
Explanation:
Divide 20 by 2
divide 120 by 30
How can you use a screen to
determine whether an image is real or virtual?
What happens to the particles when the temperature decreases?
- move more/faster
- move less/slower
- nothing changes
Answer:
move less/slower
Explanation:
If we could easily create machines or systems with no friction, what could we use them for?
If we did use zero-friction machines for these purposes, how would our everyday lives change?
Answer:
We could make a frictionless generator.
Explanation:
This would change life by making the cost for energy next to zero
The Moon has a mass of 7.35 * 1022 kg, and a radius of 1.737 * 106 m. Based on
these values, what is the acceleration due to gravity on the surface of the Moon?
Answer:
1.63 [tex]ms^{-2}[/tex]
Explanation:
The equation [tex]g = \frac{G*M}{R^2}[/tex] would be used where:
g = acceleration due to gravity
G = universal gravitational constant (6.67408 × [tex]10^{-11}[/tex] [tex]m^{3} kg^{-1} s^{-2}[/tex])
M = mass
R = radius.
assuming the values following both 10s of the mass and radius are their exponents, which is a little confusing, the values given would simply be substituted.
Anyone can correct me if I'm wrong.
if there's air in a ball and it bounces how come a room doesn't bounce
Answer:
Funny answer but works!
Explanation:
Not enough air. Go outside, crack open the window and blow air into the room like you would a balloon then close the window quickly. If it doesn't start bouncing, try giving the house a push. Good luck.
example of natural magnet
Answer: lodestone
An example of a natural magnet is the lodestone, also called magnetite. Other examples are pyrrhotite, ferrite, and columbite.
Classification of Magnets
Lodestones are a common example of natural magnets. Artificial magnets – Artificial magnets can be produced by man-made means and have a stronger magnetic field. They can also be shaped as required. When an artificial magnet is shaped in the form of a bar, it is called a bar magnet.
Explanation:
1. A wave with a frequency of 10 Hz has a wavelength of 3 meters. At what
wave speed will this wave travel?
Answer:
30 m\ s Ans .....
Explanation:
Data:
f = 10 Hz
w = 3 m
v = ?
Formula:
v = fw
Solution:
v = ( 10)(3)
v = 30 m\ s Ans ........
Do you think it is possible to control the magnetic properties of a magnet? Can a magnet be turned on and off? Explain your answer.
Answer:
Yes it is possible to control to some extent
Explanation:
Yes it is possible to control to some extent. Explanation: In general there are two types of magnets : permanent and temporary (electromagnets). ... On the other hand permanent magnet cannot be switched on and off but the magnetic properties can be altered event to an extent when it loses all its magnetic properties.
Why is it important for someone to NOT stay bedridden for a long time after
fracturing a bone?
Clayton tries to build an electric circuit using a battery, a light bulb, a paper clip, and copper wire. The diagram below shows what he builds.
Which claim best explains why the circuit would not conduct electricity?
a. The circuit lacks a power source.
b. The circuit is not a complete loop
c. The light bulb uses the electric current.
d. The paper clip stops the electric current.
Answer: letter B
Explanation:
As you can see the battery only has one wire connected to it thus not a complete loop
its b trust me man ;oih wrio'weioa'yher
People living near wind farms sometimes object to them because of visual pollution and what other
form of pollution?
Answer:
Wind turbines are a source of clean renewable energy, but some people who live nearby describe the shadow flicker, the audible sounds and the subaudible sound pressure levels as "annoying." They claim this nuisance negatively impacts their quality of life
Another form of pollution in the farm is called noise pollution
Noise pollution is simply known as disturbing or elevated sound that constitute nuisance and affects the health and well-being of people.Noise pollution from farm includes animals making different sounds, sounds from farm machineries and farm equipment etc.Conclusively, we can say that another form of pollution in the farm is called noise pollution
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The wavelength of a sound wave is 30 m. The frequency is 7 Hz. What is the wave speed?
210 m/s
4.29 m/s
Answer:
210m/s
Explanation:
To find the speed of wave you need to multiply the wave length with the frequency.
The compass is a small bar magnet that’s free to spin. Based on what you observed, is the coil of wire with current passing through it a magnet?
Answer:
People have been aware of magnets and magnetism for thousands of years. The earliest records date back to ancient times, particularly in the region of Asia Minor called Magnesia—the name of this region is the source of words like magnet. Magnetic rocks found in Magnesia, which is now part of western Turkey, stimulated interest during ancient times. When humans first discovered magnetic rocks, they likely found that certain parts of these rocks attracted bits of iron or other magnetic rocks more strongly than other parts. These areas are called the poles of a magnet. A magnetic pole is the part of a magnet that exerts the strongest force on other magnets or magnetic material, such as iron. For example, the poles of the bar magnet shown in Figure 20.2 are where the paper clips are concentrated.
A bar magnet with paper clips attached to it.
Figure 20.2 A bar magnet with paper clips attracted to the two poles.
If a bar magnet is suspended so that it rotates freely, one pole of the magnet will always turn toward the north, with the opposite pole facing south. This discovery led to the compass, which is simply a small, elongated magnet mounted so that it can rotate freely. An example of a compass is shown Figure 20.3. The pole of the magnet that orients northward is called the north pole, and the opposite pole of the magnet is called the south pole.
Answer:
Yes, the coil of wire with current passing through it is a magnet.
Explanation:
If Wile E. Coyote had enough money to buy all that ACME stuff, why didn't he just buy dinner?
Answer:
I dont know but nice question
Explanation:
I laughed super hard when I saw this
pls answer if u know the answer ^w^ thx!
Friction _____.
A) is always and unwanted force
B) works in the opposite direction of motion
C) causes machines to work 100 percent efficiently
D) can be increased using lubricants, like oil
Answer:
works in the opposite direction of motion
what happens to denstity of air as altitude decreases
I WILL GIVE BRAINLIEST
Describe your observations about the mid-ocean ridge. What did it look like? How do you think it got there?
(subject science)
Giving Brainliest
On Planet Y, which has no air, a dropped object falls 9 m in 3 seconds. What is g, the acceleration due to gravity, on that planet?
9.8 m/s2
3 m/s2
2 m/s2
Answer:
a = 2 m/s^2
which agrees with the third answer option provided.
Explanation:
Recall the kinematic formula for displacement under the action of a constant acceleration "a":
yf - yi = 1/2 a t^2
using the information provided this equation becomes:
9 = 1/2 a (3)^2
solve for a:
9 * 2 / 9 = a
then a = 2 m/s^2
which agrees with the third answer option provided.
give one
excemple where friction is a
hindrance
1) In machines, efficiency reduces due to friction has energy may be lost as heat. 2) When one falls and slides over rough surface like cement, then the injury caused is more.
A boy pushes his baby sister in a stroller that has a mass of 45,000 g. What is the acceleration on the stroller if the force is 65 N?
[tex]\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}[/tex]
Actually Welcome to the Concept of the Force.
Force = Mass * Acceleration.
here, Mass = 45 kg and Force = 65 N
hence, Acceleration = 65/45
===> Acc. = 1.44 m/s^2
hence the acceleration is 1.44 m/s^2
The name of C (S) + o2 (g) CO2 (g)
Answer:
carbon + oxygen → carbon dioxide
Can someone help me pls!!
Answer:
Decelerating
Explanation:
One arrow is moving it forward but the other arrow is using more force to move it backwards causing it to have a reduction in speed.
You are on a boat cruising at 10 m/s when you decide to accelerate at 5 m/s^2 until you reach a speed of 30 m/s.
How far did you travel during the acceleration
Answer:
Avg time (s) * Avg velocity (m/s) = Answer (m)
explain how a student could appropriate measurements and use them to determine the wavelength of the waves in the ripple tank.
Answer:
Measure the length of a number of waves then divide by the number of waves to calculate the wavelength. wavelength. Count the number of waves passing a point in ten seconds then divide by ten to record frequency. Calculate the speed of the waves using: wave speed = frequency × wavelength.
What types of human and animal behavior are "complex, unlearned, and rigidly patterned"?
Answer:
Instincts
Explanation:
instincts are complex, unlearned behaviors that are present throughout a species and genetically transmitted.
There is a bell at the top of a tower that is 45m high. The bell mass is 190. Calculate its potential energy.
Answer:
83790 J.
Explanation:
Potential Energy: This can be defined as the energy possessed by a body, by vitue of it position in the gravitational field. The S.I unit of Potential Energy is Joules (J).
From the question,
P.E = mgh........................................... Equation 1
Where P.E = potential Energy of the bell, m = mass of the bell, h = height of the tower, g = Acceleration due to gravity.
Given: m = 190 kg, h = 45 m.
Constant: g = 9.8 m/s²
Substitute these values into equation 1
P.E = 190×45×9.8
P.E = 83790 J.
Hence the potential energy of the bell is 83790 J.
Describe the importance of conservative forces to conservation of energy.
Answer:
IF a force is conservative, it is possible to assign a numerical value for the potential at any point and conversely, when an object moves from one location to another, the force changes the potential energy of the object by an amount that does not depend on the path taken, contributing to the mechanical energy and the .
Explanation:
You are trying to gain possession of the soccer ball. What position are you playing?
a. both offense and defense
b. neither offense or defense
c. offense
d. defense
Answer:
a
Explanation:
Answer:
it's d. Defense
defense
Explanation:
yes
define atmospheric pressure, prove that presence of atmospheric pressure with the help of an activity
the pressure exerted by the atmospheric air is called atmospheric pressure