Explanation:
The correct answer is option B
Answer:
C. When ice melts, it absorbs energy.
Explanation:
When ice melts, it is getting hotter by absorbing energy and changes from a solid to a liquid. This is an endothermic reaction.
how is light reflected from a prism
Answer:
White light entering a prism is bent, or refracted, and the light separates into its constituent wavelengths. Each wavelength of light has a different colour and bends at a different angle. The colours of white light always emerge through a prism in the same order—red, orange, yellow, green, blue, indigo, and violet.
An 80-kg person running at 4 m/s will have a momentum of _______ kg-m/s.
Answer:
320 Ns
Explanation:
As P=mv
So,
80(4)=320
If Bert the Bat travels eastward at 40 mph with a tailwind of 6 mph, what is his actual speed?
Answer:
36 mph.
Explanation:
Now Albert here is using the wind to his advantage but if say there was no wind then he would not have the 6 mph behind him so we subtract 6 from 40 to get 36. hope this helps :)
If a ball is rolling at a velocity of 1.5 m/s and has a momentum of 10.0 kg times m/s, what is the mass of the ball?
Answer:
Mass of the ball, M = 6.667 kg
Explanation:
Given data:
Momentum, Mo = 10.0 kgm/s
Velocity of the rolling ball, V = 1.5 m/s
Mass of the body, M = ?
Momentum, Mo = Mass, M x Velocity, V
10.0 kgm/s = M x 1.5 m/s
Divide each side by 1.5 m/s
M = 10.0 kgm/s / 1.5 m/s
M = (6⅔) kg
:. Mass of the ball, M = 6.667 kg
calculate the potential difference between points x and y
Answer:
4.275v
Thank you
Answer:
-4.27
Explanation:
hope this may help you TQ.
6. 498.82 mg comverted to kg
Answer:
0.00049882 kg
........................
Answer:
498.82 mg=0.00049882 kg
Explanation:
To get this answer, you must multiply the quantity of mg by 0.000001, which is also 0.001². Since one gram is 1000 mg, and 1000 g is 1 kg, you must divide the amount of mg by one million, or multiply by 1/1000000, or 0.000001. I hope this helped you. Enjoy your day, and take care!
Why water in a container is curved but not flat
How many cm are in 900 feet? Using the method of dimensional analysis
the right-hand tube of the manometer is open to the atmosphere. The pump has been operated so that the mercury levels differ, as shown, by 250 mm. The density of mercury is 13 600 kg / m3. i) Calculate the pressure, in Pa, due to the 250 mm column of mercury.
Answer:
P(ressure) = d g h = density * gravity * height
P = 13600 * 9.8 * .25 = 33,300 Pa
Check: 1 atm = 76 cm = 760 mm height = 1.01 * 10E5 Pa
h = 1.01 * 10E5 / 9.8 * 13600 .758 m = 758 mm for 1 atm
250 / 758 = 1/3 atmosphere = 33,700 Pa close enough for estimates
(the pressure requested is 1/3 atmosphere where 1 atm = 760 mm Hg)
In a parachute, falling steadily at 7.5m/s, how long does it take to reach the ground from 3,000 m high?
Answer:
25 minutes
Explanation:
what is gravitational ? what are the factors that affect gravition ? witre the SI unit of gravition
The gravitational force is a force that attracts any two objects with mass. Two major factors, mass and distance, affect the strength of gravitational force on an object.Newtons kg-2 m2 is it's SI unit.
Metric conversions
SHOW WORK!!!
1.) 15m —> dm
2.) .023 cc —> L
3.) .00049 km —>
4.) 0.25 kg —> g
5.) 15g —> hg
[tex]\\ \sf\longmapsto 15m[/tex]
[tex]\\ \sf\longmapsto 15(10)[/tex]
[tex]\\ \sf\longmapsto 150dm[/tex]
2:-1L=1000cm^3[tex]\\ \sf\longmapsto 0.023cm^3[/tex]
[tex]\\ \sf\longmapsto 0.023\times 0.001[/tex]
[tex]\\ \sf\longmapsto 0.00023L[/tex]
3:-1km=1000m[tex]\\ \sf\longmapsto 0.00049km[/tex]
[tex]\\ \sf\longmapsto 0.00049(1000)[/tex]
[tex]\\ \sf\longmapsto 0.49m[/tex]
4:-
1kg=1000g[tex]\\ \sf\longmapsto 0.25kg[/tex]
[tex]\\ \sf\longmapsto 0.25(1000)[/tex]
[tex]\\ \sf\longmapsto 250g[/tex]
5:-
1g=0.0001hg[tex]\\ \sf\longmapsto 15g[/tex]
[tex]\\ \sf\longmapsto 15(0.0001)[/tex]
[tex]\\ \sf\longmapsto 0.0015hg[/tex]
8. Define resistance and resistivity and also give the relation between them. Explain the
dependence of resistance on temperature.
I huhs burn for
Answer
I hope it's helps you
Defects of vision and their correction drawing
No Spams ❌❌
Answer:
Vision Correction
You probably know people who need eyeglasses or contact lenses to see clearly. Maybe you need them yourself. Lenses are used to correct vision problems. Two of the most common vision problems are myopia and hyperopia.
Explanation:
hope this helps
1 point
30. A ray passing through the centre of curvature of a concave mirror.
after reflection is reflected back along the same path. Which is the correct
figure for the above statement.
Explanation:
when the object is between the pole and focus
A boy rode a bike and covered 90 km at an average speed equals 36 km/h but he covered the first thirty km in two hours. What is the average speed at which the remaining distance was covered ?
Answer:
40
Explanation:
because his increasing speed
What do you know about nuclear energy?
Answer:
Nuclear energy comes from splitting atoms in a reactor to heat water into steam, turn a turbine and generate electricity. Ninety-three nuclear reactors in 28 states generate nearly 20 percent of the nation's electricity, all without carbon emissions because reactors use uranium, not fossil fuels.
please follow meA tall pea plant (Tt) is crossbred with a short pea plant (tt). The following Punnett square shows the separated alleles for two pea plants.
Which of the following shows the correct match of the box numbers and the genotype of the offspring?
A. 1 = Tt; 2 = tt; 3 = Tt; 4 = tt
B. 1 = Tt; 2 = Tt; 3 = Tt; 4 = Tt
C.1 = Tt; 2 = Tt; 3 = tt; 4 = tt
D. 1 = Tt; 2 = tt; 3 = tt; 4 = tt
[tex]Hello[/tex] [tex]There![/tex]
The answer is...
A. 1 =Tt; 2 = tt; 3 = Tt; 4 = tt.
Hopefully, this helps you!!
[tex]AnimeVines[/tex]
Weight is equal to:
A. mg^2
B. m/g
C. mg
D. m^2g
True or false: Pluto is a dwarf planet
Answer:
Pluto is a dwarf planet. Turr
The P.E stored by a mass spring system at an extension of 2 cm is 10 J. The P.E stored by the same system at an
extension of 4 cm will be:
Explanation:
extension(x) = 0.02m When the P.E is 10J.
extension(x)= 0.04m PE?.
P.E is proportional to Extension²
P.E/x² = P.E"/x"²
10/(0.02)² = P.E/(0.04)²
P.E= 10x(0.04)²/(0.02)²
P.E= 40J
Venus
Mars
It has no atmosphere due
to weak gravity.
Europa
It is too hot for liquid
water to exist.
--
Earth's moon
1
1
1
It is too cold for liquid
water to exist on the
surface.
?
Scientists believe it used
to have flowing liquid
water.
SUBMIT
Answer:
Earth is the only known planet to have bodies of liquid water on its surface. Europa is thought to have subsurface liquid water. ... Evidence points to water on other planets in our solar system. In 2015, NASA confirmed that liquid water flows intermittently on present-day Mars
Mark me a brainlist
the length of air column at which the first resonance was observed when a vibrating fork was placed on a resonance tube was 30cm. Calculate the wavelength of air column and frequency of the fork speed of sound 330m/s
[tex]\boxed{\sf Wavelength=\lambda=4\ell}[/tex]
[tex]\\ \sf\longmapsto \lambda=4(0.3)[/tex]
[tex]\\ \sf\longmapsto \lambda=1.2m[/tex]
Now
[tex]\boxed{\sf Frequency=\nu =\dfrac{v}{\lambda}}[/tex]
[tex]\\ \sf\longmapsto \nu=\dfrac{330m/s}{1.2m}[/tex]
[tex]\\ \sf\longmapsto \nu=275s^{-1}[/tex]
Answer:
Velocity=330m/s=v
Length=l=30cm=0.3m
Wavelength=λ=4ℓ
⟼λ=4(0.3)
⟼λ=1.2m
Now
Frequency= ν= λ/v
⟼ν= 1.2m/330m/s
⟼ν=275s^-1
hope it's help you...!!!!
#rishu
Plsss helppp me I have a lot of questions pls help me I will mark brainliest!!!
Answer:
kilo means 1000
2a. 0.1
b. 100
c.0.01
d. 0.001
3a.km
b.mL
d.cg
e.mm
g. g
h.kL
It is better to use crow bar to displace a heavy load than with hands . Give reason .
Explanation:
Cause it multiples force which makes it easier to move.
Describe how you would measure the Volume of an irregular solid object.
You can include any apparatus and equations.
Answer:
Find a recipient that you can put the object completely inside, and fill this recipient with water. After, you put the irregular solid you want to measure the volume inside, and the water will spill out the recipient. So you take the water that spilled out and uses a graduated recipient to measure the volume of water. The volume of the solid will be exactly the same volume of water that spilled of the first recipient
A baseball diamond is a square (don’t be fooled that it is usually shown rotated by 45°). Each side of the square is 90 feet long (to two significant figures). How far must a fielder throw the ball from second base to home plate?
A line from second to home creates a right triangle with 45 degree angles.
This makes the diagonal line the side length of the square multiplied by the sqrt(2)
Second to home = 90sqrt(2) = 127.279 feet ( round answer as needed)
if u can solve these with work i will literally love u forever
Answer:
I cant open it neither I can download it!
A student uses the right-hand rule as shown.
What is the direction of the magnetic field in front of the wire closest to the student?
O up
Oright
O down
O left
Answer: O:right
Explanation: In this case you place your finger on the current, and your fingers should curl showing the way, you must use your right hand in this case, otherwise that would mean the fingers on your left would bend way back, and snap off, (Not really lol, just saying)
The direction of the magnetic field in front of the wire closest to the student is right. Thus, the correct option is B.
The direction of the magnetic field encircling a current-carrying wire can be determined using the right-hand rule. The magnetic field's direction is shown by the direction in which your fingers wrap around the wire if you point your right thumb in the direction of the current.
In this case, the student is using the right-hand rule with their thumb pointing upward. This means that the direction of the current is flowing into the page, perpendicular to the direction of their thumb.
To determine the direction of the magnetic field in front of the wire closest to the student, we can curl our fingers around the wire in the direction of the current (into the page) while keeping our thumb pointing upward. This results in the direction of the magnetic field being to the student's right.
To learn about Fleming's left-hand rule, click: https://brainly.com/question/20347569
#SPJ7
in the Newton's Third Law of Motion state three characteristics
Answer:
Newton's third law: If an object A exerts a force on object B, then object B must exert a force of equal magnitude and opposite direction back on object A. This law represents a certain symmetry in nature: forces always occur in pairs, and one body cannot exert a force on another without experiencing a force itself.