Answer:
The bending occurs because light travels more slowly in a denser medium.
Astrology is considered a science because it is grounded in scientific research. Please select the best answer from the choices provided T
Answer:
False. Astrology is not a science.
Explanation:
Astrology is a collective term for ideas about the supposed connection between the fate of people and events on Earth and the position of the celestial bodies. It mainly concerns the places in the sky of the sun, moon and planets, which were referred to as stars in ancient times, usually against the background of the fixed stars in the Zodiac. Although astrology cannot be confirmed despite research, and scientists have long rejected the principles of astrology as pseudoscience, many people continue to practice and / or believe in it.
Answer:
False
Explanation: i got it right in edge
List three ways light can be grouped based on how much light shines through or passes through them
Answer:
Materials can be classified based on the amount of light they transmit. Materials, which allow complete transmission of light, are called transparent. Any object can be seen through a transparent material. One example of transparent material is pure glass.
Explanation:
Does this help ?
Answer:
light, materials, and shadows
Explanation:
hope this helps have a good rest of your day :) sorry if incorrect
SOMEONE HELP PLEASE ASAP ITS TIMED
A boy is slowly pushing a box across the floor. In which direction is friction occurring?
a. away from the boy
b. toward the boy
c. up
d. down
Which is a possible result of rising ocean temperatures caused by global warming?
formation of dust bowls
increase in strength of hurricanes
rapid evaporation of water in soil
decrease in population due to health threats
Answer:
Increase in strength of hurricanes
Explanation:
A possible result of rising ocean temperatures caused by global warming is increase in strength of hurricanes.
What is global warming?Global warming is an environmental concern characterized by the gradual increase in the Earth's atmospheric temperature.
Global warming can lead to the rise of temperature in air and oceans as well.
One consequence of an increase in ocean temperature is that the strength of hurricanes, which is strong wind accompanied by rain, will be increased.
Therefore, a possible result of rising ocean temperatures caused by global warming is increase in strength of hurricanes.
Learn more about global warming at: https://brainly.com/question/12908180
(the answer is not 0.482)
Calculate the force of gravity between two objects of masses 1300 kg and 7800 kg, which are 0.23 m apart.
Answer:
F = Gm1m2/r^2 where G = 6.67x10^-11, m1 =1300, m2 = 7800, r = 0.23m
F = 6.67x10^-11 *1300*7800/(0.23)^2 = 0.0127852N
Explanation:
What type of energy is stored in the nucleus of an atom?
Answer:
Nuclear energy
Explanation:
The nucleus holds the energy together
Why do water molecules tend to stay together and hold their shape? Name and explain the phenomenon by which this happens
Answer:
because liquid and solid states of water possesses intermolecular force of attraction which held the molecules of water in fixed
The car has a mass of 22,000Kg. Calculate the force needed to stop the car.
Answer:
Momentum of car = 1200 kg * 10 m/s = 12000 kgm/s Momentum = Force * time 12000 kgm/s = Force * 20s Force = 600 N
Explanation:
What element does the picture represent? (Use the periodic table if you need to) *
(1 Point)
nitrogen
O chlorine
O oxygen
When is the world going to end? Give me your opinions and the reasons why you think that.
Answer:
probably when the next pandemic happens
Which number sentence is true? *
376,425 >367,419
337,425 >337,524
336,425 <335,426
327,425<327,416
Answer:
first one
Explanation:
376,425 is the biggest number in general
Answer:
the first line is true whuch is 376425>367419
What is the kinetic energy of a jogger with a mass of 65.0 kg traveling at a speed of 2.5m/s
Answer:
203.1J
Explanation:
Given parameters:
Mass = 65kg
Speed = 2.5m/s
Unknown:
Kinetic energy of jogger = ?
Solution:
To solve this problem, we use the kinetic energy equation:
K.E = [tex]\frac{1}{2}[/tex] m v²
m is the mass
v is the velocity
Now insert the parameters and solve;
K.E = [tex]\frac{1}{2}[/tex] x 65 x 2.5² = 203.1J
b. Find the centripetal force needed to keep an 60.0 kg rider traveling in a circle in the ride.
Given:
m =
v = (from part a)
r=
Unknown:
F=?
Equation:
F= m (v^2) / r
Answer:
loloololo
lol
Explanation:
lolloolololo
You are riding a skateboard and hit a hole in the street, causing you to fly off the board and crash. Which law represents this action? *
Answer:
It's Laws of Motion
Explanation:
Is the amount of friction greater between rough surfaces or smooth surfaces? Why?
Answer:
Rough surfaces have more microscopic hills and valleys than smooth surfaces do. So, the rougher the surface is, the greater the friction is.
Which two options describe behaviors of particles that are related to the
chemical properties of the materials?
A. Allowing electrons to move freely between them
B. Easily forming bonds with atoms of other elements
C. Changing their positions relative to one another
O
D. Combining with oxygen atoms to form a new substance
Answer:
B
Explanation:
When The conduct of particles is connected to the chemical properties of the materials. The two options are correct B and D.
What are Chemical Properties?
A property of a substance connecting to its chemical reactivity (as the incendiary effects of nitroglycerin).
Chemical stability and oxidation circumstances, different chemical properties include: Essentially, the chemical property is a differentia that may only be commemorated as an influence of a chemical reaction.
Therefore, The two correct options are B. Efficiently forming bonds with atoms of different elements and D. Converging with oxygen atoms to form a unique substance.
Find more information about Chemical Properties here:
https://brainly.com/question/17719190
What is the acceleration for an object moving with constant speed? Explain your answer
Answer:
What is the acceleration of an object moving at a constant speed?
The Meaning of Constant Acceleration
The data table above show an object changing its velocity by 10 m/s in each consecutive second. This is referred to as a constant acceleration since the velocity is changing by a constant amount each second.
Answer:
there is no acceleration for an object moving with constant speed
Explanation:
it is because acceleration is change in velocity and constant means same or without any change so there is no acceleration for an object which is moving with same speed
hope it helps:)
A 0.45kg baseball is pitched towards home plate at 20 m/s. The ball is hit back towards the pitcher with a speed of 30 m/s. What is the change in momentum of the baseball?
Answer:
4.5kgm/s
Explanation:
Change in momentum is expressed as
Change in momentum = m(v-u)
M is the mass
V is the final velocity
u is the initial velocity
Given
m=0.45kg
v = 30m/s
u = 20m/s
Substitute
Change in momentum = 0.45(30-20)
Change in momentum = 0.45×10
Change in momentum = 4.5kgm/s
please help me solve
Answer:
I think D
Explanation:
Which of the following has the greatest inertia ?
A) A 2000 kg car traveling along a highway at 20 m/s.
B) A 2200 kg car parked in a garage
C) A bullet of a mass of 30 grams flying at 300 m/s
D) A 2000 kg helicopter flying at 60 m/s
Answer:
b
Explanation:
Which item has the most thermal energy?
Answer:
A
Explanation: The hotter things get the more thermal energy they have
Also don't ever take pictures like this again
Answer:A
Explanation:
1 kg of boiling water is hot enough to melt a block of ice more quickly
Pollen grains help scientists
identify plants and make assumptions on past climate conditions.
understand tree growth and make assumptions on past climate conditions.
understand how Earth was shaped and make assumptions on past climate conditions.
identify major ice ages and make assumptions on past climate conditions.
Answer:
A. identify plants and make assumptions on past climate conditions.
Explanation:
Answer was right on my Edge quiz!
Pollen grains help scientists identify plants and make assumptions on past climate conditions.
WHAT IS PROXY CLIMATE?Proxy climate is climate inferred from past records i.e. not current.
Proxy climate makes use of proxy climate data also called proxies. These proxies help in inferring about the past climate.
Examples of proxies are;
pollen grainsCoral reefsIce coresTherefore, pollen grains help scientists identify plants and make assumptions on past climate condition.
Learn more about past climate at: https://brainly.com/question/9328022
Kinetic energy and mass are ________ proportional.
Answer:
The Kinetic energy and mass are _directly_ proportional.
Explanation:
We know that Kinetic Energy is basically termed as the capacity of a body to do work.
Kinetic energy is often used to associate with moving objects, therefore, K.E is normally termed as the energy of motion.
The formula of K.E of an object of mass and velocity is defined
K.E = 1/2mv²
From the formula, it is clear that K.E is directly proportional to its mass and also directly proportional to the square of its velocity.
For example,
If A toy plane with a mass of 10 kg is flying at 20 m/s. Its K.E will be:
m = 10 kgv = 20 m/sK.E = 1/2mv²
= 1/2(10)(20)²
= 1/2(10)(400)
= 5(400)
= 2000 J
Now, let suppose, if we double the mass of a toy plane i.e.
m = 20 kg
so
K.E = 1/2mv²
= 1/2(20)(20)²
= 1/2(20)(400)
= 10(400)
= 400 J
Therefore, the K.E is doubled when doubled the mass.
Therefore, the Kinetic energy and mass are _directly_ proportional.
Answer:
directly
Explanation:
In the water cycle, water travels from bodies of water to the ____________. Then it travels back to the ground and to the oceans.
soil
mountains
air
lithosphere
Answer:
air
Explanation:
Water bodies are already found on the Earth's surface made up of soil which is part of the lithosphere
when a person holds a ball above earth's surface, where is this potential energy stored?
Answer:
in the ball
Explanation:
potential energy is where an object has energy, always, but it isn't always moving, and when you drop the ball, it has kinetic energy.
Roller coasters accelerates from initial speed of 6.0 M/S2 final speed of 70 M/S over four seconds. What is the acceleration?
Answer:
[tex]a=16\ m/s^2[/tex]
Explanation:
Motion With Constant Acceleration
It's a type of motion in which the velocity of an object changes uniformly in time.
The formula to calculate the change of velocities is:
[tex]v_f=v_o+at[/tex]
Where:
a = acceleration
vo = initial speed
vf = final speed
t = time
The roller coaster moves from vo=6 m/s to vf=70 m/s in t=4 seconds. To calculate the acceleration, solve for a:
[tex]\displaystyle a=\frac{v_f-v_o}{t}[/tex]
[tex]\displaystyle a=\frac{70-6}{4}=\frac{64}{4}[/tex]
[tex]\boxed{a=16\ m/s^2}[/tex]
The unit for acceleration is always
Explanation:
Because acceleration is velocity in m/s divided by time in s, the SI units for acceleration are m/s2, meters per second squared or meters per second per second, which literally means by how many meters per second the velocity changes every second. ... The quicker you turn, the greater the acceleration.
An ocean fishing boat is drifting just above a school of tuna on a foggy day. Without warning, an engine backfire occurs on another boat 1.0 km away. How much time elapses before the backfire is heard by the fish (a)
Answer:
0.641 seconds
Explanation:
Distance (d) = 1.0 km
Using the relation :
Speed = distance / time
Time = distance / speed
Speed of sound in seawater is about 1560 m/s
Distance = 1.0km =
1km = 1000m
Time = 1000 / 1560
Time = 0.6410256
Time = 0.641 s
Please I need help with this question (see image).
Show workings where necessary.
Answer:
Solution:
i) Heat supplied by heater = Heat gained by water = m * c*theta = 0.12Kg * 4200 * 10 = 5040Joules in 2 minutes.
ii) Power = Energy/time = 5040J/(2 * 60seconds) = 5040J/120seconds = 42Watts.
(iii) Heat supplied to the 70g of water = m * c * theta = 0.07Kg * 4200 * 9K = 2646J
(iv) Heat supplied by heater = Heat gained by 70g of water + Heat supplied to the metal vessel.
But,from our calculations above,
Heat supplied by heater = 5040J ......and
Heat supplied to the 70g of water = 2646J
.: substituting the values,we have that :
5040J = 2646J + Heat supplied to the metal vessel.
5040J - 2646J = Heat supplied to the metal vessel.
.: Heat supplied to the metal vessel = 2394J.
(v) Heat gained by metal vessel = Heat capacity of the vessel * theta.
2394J = Heat capacity of the vessel * 9K
.: Heat capacity of the vessel = 2394/9 = 266(Joule per Kelvin)
(vi) Using the formula:
Heat Capacity = mass * specific heat capacity
.: Specific heat capacity = Heat Capacity/mass = 266/0.55 = 484(Joules per Kilogram per Kelvin)
Explanation:
________❤️ hope it helps you ❤️__________