Answer:
Fog forms in a valley
Explanation: that’s the only reasonable response
An example of condensation Fog disappears when the Sun comes out.
What is condensation?Condensation is the change of the state of matter from the gas phase into the liquid phase, and is the reverse of vaporization. The word most often refers to the water cycle.
The process through which the physical state of matter changes from the gaseous phase into the liquid phase Fog disappears when the Sun comes out.
An example of condensation Fog disappears when the Sun comes out.
To learn more about condensation refer to the link:
brainly.com/question/15563071
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A student drops a rock from a bridge to the
water 13.1 m below.
With what speed does the rock strike
the water? The acceleration of gravity is
9.8 m/s
2
.
Answer in units of m/s.
A ball thrown at 4 meters/second exerts 200 Newtons of force. The mass of the ball is:
Answer:
50
Explanation:
200 divided by 4 gives you the mass of 50
What is an example of a material that has been modified to be used in a new or improved technology?
Answer:
wind turbines,photovoltaic cells,concentrated solar power, ocean wave power
Describe two uses for a member of each representative group.
What mass of silver will occupy a volume of 87.75 mL?
The density of silver is 10.49 g/mL.
Answer:
The mass of silver that will occupy a volume of 87.75 mL is 920.5 grams.
Explanation:
Density is defined as the property that matter, whether solid, liquid or gas, has to compress into a given space. In other words, density is a quantity that allows us to measure the amount of mass in a certain volume of a substance. Then, the expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:
[tex]density=\frac{mass}{volume}[/tex]
So the density of silver is 10.49 g / mL indicates that 10.49 g occupies a volume of 1 mL. Then a rule of three can be applied in the following way: if in 1 mL a mass of 10.49 g is occupied, in 87.75 mL how much mass will it occupy?
[tex]mass=\frac{87.75 mL*10.49 g}{1 mL}[/tex]
mass= 920.5 g
The mass of silver that will occupy a volume of 87.75 mL is 920.5 grams.
A passenger train travels from Orange Grove to Lyman, a distance of 430 km. If the route takes 5.6 h, what is the train's speed?
Answer:
76.7 or 77 kmph
Explanation:
430/5.6=
Which answer best explains why the contents of a warm can of carbonated drink might rush out of the can faster than the contents of a cold can when the cans are first opened? A The warm drink is under higher pressure than the cold drink, B The temperature of the gas in the warm drink increases when the can is opened. The volume of the drink decreases slightly when the temperature increases D The warm drink has more gas dissolved in it than the cold drink,
Answer:
its A
Explanation:
Answer:
Explanation: I had this test
Astronomers observe a spectral analysis of a distant star where a particular element has a spectral line with a wavelength of 663 nm. In the laboratory, the same element has a spectral line with a wavelength of 645 nm.
a. How fast is the star moving, and in what direction is it moving?
b. The same element on Earth’s surface is observed from a space shuttle orbiting at 7800 m/s,
350 km above Earth. Is the same shift in the spectral line seen from the space shuttle? Why or why not?
Answer:
(a). The velocity of star is [tex]8.1\times10^{6}\ m/s[/tex] and the direction of star toward the earth.
(b). The shift is 0.0168 nm.
Explanation:
Given that,
Wavelength of spectral line = 663 nm
Wavelength of spectral line in lab = 645 nm
(a). We need to calculate the velocity
Using doppler's effect
[tex]\Delta \lambda=\dfrac{v}{c}\lambda[/tex]
Where, [tex]\Delta\lambda[/tex]= change in wavelength
v = velocity
c = speed of light
Put the value into the formula
[tex]663-645=\dfrac{v}{3\times10^{8}}\times663[/tex]
[tex]v=\dfrac{3\times10^{8}(663-645)}{663}[/tex]
[tex]v=8144796.38\ m/s[/tex]
[tex]v=8.1\times10^{6}\ m/s[/tex]
The direction of star toward the earth.
(b). Speed = 7800 m/s
We need to calculate the shift
Using formula of shift
[tex]\Delta \lambda=\lambda(\sqrt{\dfrac{1+\dfrac{v}{c}}{1-\dfrac{v}{c}}}-1)[/tex]
Put the value into the formula
[tex]\Delta \lambda=645\times(\sqrt{\dfrac{1+\dfrac{7800}{3\times10^{8}}}{1-\dfrac{7800}{3\times10^{8}}}}-1)[/tex]
[tex]\Delta\lambda=0.0168\ nm[/tex]
This shift is small compare to the the movement of Earth around the sun.
Hence, (a). The velocity of star is [tex]8.1\times10^{6}\ m/s[/tex] and the direction of star toward the earth.
(b). The shift is 0.0168 nm.
Someone Pls help me it will help. I will give brainlist.
Answer:
nm i believe pls crown
Explanation:
why did she leave me
She left you.. for another pokemon.
O_o - SikeBrehh 9
Answer:
cuz charmander is better lol
Explanation:
The higher the object is and the heavier it is, the less gravitational potential energy it stores.
A. True
B. False
A dog pushes a ball 0.25 kg with a net force of 4 N. What is the acceleration?
O 3.75 m/s2
O 4.25 m/s2
O 16 m/s2
1 m/s2
Formulating a Hypothesis
Write a hypothesis about the effect of the fan speed on
the acceleration of the cart. Use the "if then
because "format and be sure to answer the lesson
question: "How does an object's position and velocity
change as the object accelerates?"
Answer:
If the fan speed increases, then the acceleration increases because a greater fan speed supplies more energy to move the cart.
Explanation:
The mass number minus the atomic number is equal to the number of
Answer:
neutron
Explanation:
what does acceleration always refers as
Answer:
Acceleration always refers to a(n) Change in velocity. A change in direction without a change in speed is called velocity.
Explanation:
Answer:
Acceleration is refers as the change in velocity
A scientist conducting a field investigation records measurements of very low pressure and high relative humidity at the top of a mountain. A weather map indicates that a warm front is approaching the mountain. Which condition would the scientist most likely observe at the top of the mountain?
Answer:
Please find the answer in the explanation
Explanation:
Given that a scientist conducting a field investigation records measurements of very low pressure and high relative humidity at the top of a mountain.
Since a weather map indicates that a warm front is approaching the mountain, according to the conventional current, the warm front is approaching because the weather must have been in higher relative humidity in cool air.
The warm front is approaching to replace it so that the cool air can conventionally replace the warmth air too.
The condition the scientists will most likely observe at the top of the mountain will be high relative humidity.
Q#1 A car is observed traveling 133 m in 4.5 seconds. (Show work)
A) What is its Velocity in m/s?
B) How long would it take this car to travel 3500m?
Answer:
A) 25.56 m/s (I rounded because it was repeating)
B) 118.40 seconds
Explanation:
To calculate speed/velocity, you divide distance by time so you would do 133/4.5=25.5556
Then, to calculate the time, you divide distance by speed/velocity, so 3500/25.56=118.403
12.
Which of the following does NOT describes alpha decay?
a. changes the elemental identity of the atom c. absorbs binding energy to produce more stable
nucleus
b. emits a high energy helium nucleus d. mostly occurs in proton heavy nuclei below the zone of
stability
What is the mass and density of 237 mL of water
Answer:
V(water)= 237 mL=237×10^-6 m^3ρ(water)=1000 kg/m^3m=ρ×V=(1000)×(237×10^-6)m= 237×10^-3 = 0.237 kgm= 237 gram.A car travels north at 30.0 m/s for 10.0 min. It then travels south at 40.0 m/s for 20.0 min. What are the total distance that car travels and its displacement?
Answer:
A car travels north at 30.0 m/s for 10.0 min. It then travels south at 40.0 m/s for 20.0 min. What are the total distance the car travels and its displacement?
Let DS & DP denote net distance & net displacement of the car.
Hence from above data we get following relations,
DS = 10*60*30 + 20*60*40
or DS = 18000 + 48000
or DS = 66000 (m) = 66 (km) [Ans]
DP = + 10*60*30 (NORTH) - 20*60*40 (SOUTH) [assuming NORTH as +ve]
or DP = + 18000 (NORTH) - 48000 (SOUTH)
or DP = - 30000 (SOUTH) = - 30 (km) (SOUTH)
Someone help me pls I will give brainlist
Answer:
the answer is point no. a °C , c. K and d. °F
Answer:
C and F
Explanation:
Because that’s how weather people measure tempature
(Brainliest?)
A car is travelling to the right with a speed of 42 m/s when the driver slams on the brakes. The car skids for 4.0 s
with constant acceleration before it comes to a stop.
What is the displacement of the car as it skids to a stop?
Answer:
84
Explanation:
use d= (vi+vf/2)t to solve goodluck <3
You pull a sled with a package on it across a snow-covered flat lawn. If you
apply a force of 46.8 N to the sled, it accelerates at 0.75 m/s2. What is the
combined mass of the package and the sled? (Assume there is no friction.)
A. 62.40 kg
B. 52.50 kg
C. 96.75 kg
D. 35.10 kg
Answer:
m = 62.4 kg
Explanation:
The force applied to the sled, F = 46.8 N
Acceleration of the sled, a = 0.75 m/s²
We need to find the combined mass of the package and the sled. Let it is m. Using definition of force as follows :
F = ma
[tex]m=\dfrac{F}{a}\\\\m=\dfrac{46.8}{0.75}\\\\m=62.4\ kg[/tex]
So, the mass of the package and the sled is 62.4 kg.
Answer:A
Explanation:
As a projectile falls, what happens to the components of velocity?
Question 25 options:
vertical velocity decreases in magnitude, horizontal velocity decreases
vertical velocity decreases in magnitude, horizontal velocity decreases
vertical velocity increases in magnitude, horizontal velocity stays the same
vertical velocity increases in magnitude, horizontal velocity increases
Answer:
Option (c).
Explanation:
An object when when projected at an angle, will have some horizontal velocity and vertical velocity such that,
[tex]v_x=v\cos\theta\ \text{and}\ v_y=v\sin\theta[/tex]
[tex]\theta[/tex] is the angle of projection
The horizontal component of the projectile remains the same because there is no horizontal motion. Vertical component changes at every point.
As a projectile falls, vertical velocity increases in magnitude, horizontal velocity stays the same .
As a projectile falls, The vertical velocity increases in magnitude and horizontal velocity stays the same as the components of velocity.
What is vertical velocity?acceleration caused by gravity always affects velocity in the vertical direction, it is a unique sort of velocity. This acceleration, which has a magnitude of around 10 meters/second/second, or 10 meters/second squared, directed downward, toward the center of the earth, affects any object that is hurled up, thrown down, or dropped in a vertical direction.
The thingswhich goess up must come down is a proverb that perfectly captures vertical velocity. Objects will fall back to the earth at a pace of around 10 meters per second every second due to the earth's gravity.
Therefore, As a projectile falls, The vertical velocity increases in magnitude, and horizontal velocity stays the same as the components of velocity.
To learn more about velocity, refer to the link:
https://brainly.com/question/28738284
#SPJ2
bungee jumpers leap off high cliffs to enjoy the speed gravity gives them. what is the speed of a jumper 10 seconds after jumping
Answer:
98 m/s.
Explanation:
In this problem, we need to find the speed of a jumper 10 seconds after jumping. Initially, the bungee jumper was at rest. Let v is the speed after 10 s. Using first equation of motion.
v = u +at
Here, u = 0 and a = g
v = gt
v = (9.8 m/s)(10 s)
v = 98 m/s
So, the speed of a jumper 10 seconds after jumping is 98 m/s.
Answer:
-98
Explanation:
negative because -9.8(10)
Question 2
1 pts
A study performed yielded results that indicated the more natural sunlight a person was
exposed to, the more likely they were to show increases in serotonin in their
bloodstreams. This correlation is an example of a
correlation
hi :) why is the second last (about radiation through vacuum) false?
Answer:
Explanation:
This would be false because thermal energy transfer through radiation can also travel through matter as well as the vacuum.
(sorry i'm not to good at explaining things)
Atmospheric pressure is greater at the base of a mountain than at
its peak. A hiker drinks from a water bottle at the top of a mountain. The
bottle is capped tightly. At the base of the mountain, the water bottle has
collapsed slightly. What happened to the gas inside the bottle? Assume
constant temperature.
At the top of the mountain, when he tightens the cap onto the bottole, there is some water and some air inside the bottle. Then he brings the bottle down to the base of the mountain.
The pressure on the outside of the bottle is greater than it was when he put the cap on. If anything could get out of the bottlde, it would. But it can't . . . the cap is on too tight. So all the water and all the air has to stay inside, and anything that can get squished into a smaller space has to get squished into a smaller space.
The water is pretty much unsquishable.
Biut the air in there can be COMPRESSED. The air gets squished into a smaller space, and the bottle wrinkles in slightly.
What are tiny sacs at the end of the bronchioles filled with air called?
Answer:
Alveoli
The bronchioles end in tiny air sacs called alveoli, where oxygen is transferred from the inhaled air to the blood.
Hope this helps :)
what do you mean by momentum.Explain
