Explanation:
Given that,
Mass of a skier, m = 55 kg
The vertical distance between start and finish is 10 m.
(a) The potential energy of a skier is given by :
[tex]E=mgh\\\\E=55\times 9.8\times 10\\\\=5390\ J[/tex]
(b) When she reaches the bottom of the hill, the potential energy is converted to kinetic energy. So,
[tex]5390=\dfrac{1}{2}mv^2\\\\v=\sqrt{\dfrac{2\times 5390}{55}} \\\\v=14\ m/s[/tex]
Hence, her potential energy is 5390 J and at the bottom of the hill she is moving with a speed of 14 m/s.
which term describes when a substance is changed from a liquid to a gas
Answer:
vasporisation
Explanation:
process used to change liquid to gass
Answer:
I believe it's Evaportation or another word would be Vaporisation.
Explanation:
hope this helps! ^^
out of solid and liquid in which the effect of gravity is more
Answer:
Liquid
Explanation:
Thw answer is liquid
A 3kg ball has an initial velocity of 6m/s. How much energy will be transformed into Gravitational
Energy?
[WASSCE June 2008 Qu 11]
[
A force of 20 N acts at an angle of 30° to the
horizontal. Determine the vertical component
of the force.
A. 17.30 N
B. 11.50 N
C. 10.00 N
D. 7.50 N
[WASSCE Nov 2008 Qu 11
α=30°
F=20 N
Fh=F*cos(α)
Fv=F*cos(90-α)=F*sin(α) (vertical component of the force F)
Fv=20*0,5=10.00 N
Answer (C)
What is the unit for molar mass?
Answer:
kilogram per mole
Explanation:
ffdddddfsds
Answer: g/mol
Explanation:
What is the velocity of a wave with a frequency of 300 Hz and a wavelength of 0.45 m?
Answer:
velocity= 135m/s
Explanation:
velocity = 300×0.45
= 135m/s²
How are reversibility, time, and entropy connected
Answer:
As one goes "forward" in time, the second law of thermodynamics says, the entropy of an isolated system can increase, but not decrease. ... Thus, entropy measurement is a way of distinguishing the past from the future.
Explanation:
An object initially traveling at 20.0 m/s south decelerates uniformly at 6.00 m/s2 and is displaced 25.0 m. What is the final velocity of the object? (magnitude and direction)
Answer:
50.37 m/s and 40ms object
NEED THIS DONE ASAP HELP
Answer: Exercise Physiology
Explanation:
Ranjana has average velocity 3.2 m/s
How long does she take to cover a displacement
of 256 m
Answer:
t= 80 seonds
Explanation:
Given that,
The average velocity of Ranjana, v = 3.2 m/s
We need to find how long does she take to cover a displacement of 256 m. Let she takes t time.
We know that,
Average speed = distance/time
So,
[tex]t=\dfrac{d}{v}\\\\t=\dfrac{256\ m}{3.2\ m/s}\\\\t=80\ s[/tex]
So, she will take 80 seconds to cover a displacement of 256 m.
Which is considered a dark green vegetable?
A.
Carrots
B.
Broccoli
C.
Squash
D.
Green peas
Answer:
Broccoli
Explanation:
Answer:
b. broccoli
Explanation:
took the quiz
hope this helps
Is chochlate milk a element
Answer:
no
Explanation:
it's a graph
Answer:
It specifically is not a element but it has plenty of elements in it
Explanation:
pleaaaaaaaaaaaaaaase help me vvvvvvvvvvvvvvv
Which one, mass or weight, would change if you were to travel to another planet or moon?
Answer:
The answer is weight.
Mass is constant, your mass, height and width won’t change. So that leaves weight.
You push on 35 N object for 3 seconds. Find work.
A 3000 kg truck travelling at 50km/hr strikes a stationary 1000 kg car, locking the two vehicles
together. What is the final velocity of the two vehicles?
(Please show work)
Answer:
50 x 3000 = 150000/4000 = 37.5
37.5 I think.
Explanation:
Hope this helps!
A 3000 kg truck travelling at 50km/hr strikes a stationary 1000 kg car, locking the two vehicles together, the final velocity of the two vehicles after the collision is approximately 10.43 m/s.
We may use the concept of conservation of momentum to calculate the final velocity of the two vehicles after the collision.
The total initial momentum (P_initial) is given by:
P_initial = (mass of truck) * (initial velocity of truck) + (mass of car) * (initial velocity of car)
P_initial = (3000) * (50) + (1000) * (0)
The velocity:
Vt = 50 * (1000/3600) = 13.9 m/s
Vc = 0 = 0 m/s
P_initial = (3000) * (13.9) + (1000) * (0 )
P_initial = 41700 kg·m/s
P_initial = P_final
41700 kg·m/s = (3000 kg + 1000 kg) * Vf
41700 kg·m/s = 4000 kg * Vf
Now Vf:
Vf = 41700 kg·m/s / 4000 kg
Vf ≈ 10.43 m/s
Therefore, the final velocity of the two vehicles after the collision is approximately 10.43 m/s.
For more details regarding velocity, visit:
https://brainly.com/question/30559316
#SPJ2
Review the poster.
https://www.cdc.gov/handwashing/pdf/wash-your-hands-fact-sheet-508.pdf
Which statement best describes the purpose of the “Stop Germs! Wash Your Hands” poster?
to inform people of when, how, and why to wash their hands
to entertain people with a how-to demonstration
to describe the sensory experience of washing hands
to persuade people to engage in more healthy hygiene practices
Answer: A, to inform people of when, how, and why to wash their hands.
Explanation: in the poster it shows when you should wash your hands, how you should wash your hands, and why its important to wash your hands! Please give brainliest!
The statement on the CDC poster is meant to to inform people of when, how, and why to wash their hands.
Why hand washing?Hand washing is a very important way of stopping the spread of infectious diseases. We saw this especially during the pandemic when there was a wider call for hand washing.
The statement “Stop Germs! Wash Your Hands” on the CDC poster is meant to to inform people of when, how, and why to wash their hands.
Learn more about hand washing: https://brainly.com/question/17756657
when you do work on an object you transfer,
If you pour hot soup into a bowl, and the bowl stays cool to the touch, you can assume that...
Answer:
The soup still is cool, or since its recent it will take a while to get warmer
Explanation:
Example of kinetic to thermal? And explain how the energy is changing forms? Please help
Answer:
Indeed
Explanation:
Answer:
A roller coaster that is running heating up the rails
Explanation:
the enery is changing forms due to friction and cunduction
hii please help i’ll give brainliest if you give a correct answer please
Answer:
they are equal and act in opposite directions
Explanation:
newton's third law of motion states that if object A exerts a force on object B, then object B will exert an equal but opposite in direction force.
hope it helps, I think my response was late,
Can y’all help me pleaseeee
what is the standard unit of velocity
Answer:
Explanation:
Meters per second
Answer:
m/s (meters per second)
Explanation:
what is the formula for acceleration?
Answer:
Acceleration (a) is the change in velocity (Δv) over the change in time (Δt), represented by the equation a = Δv/Δt. This allows you to measure how fast velocity changes in meters per second squared (m/s^2). Acceleration is also a vector quantity, so it includes both magnitude and direction.
Explanation:
The smallest particle of an element; made of electrons, protons, and neutrons
Answer:
atom
Explanation:
Radio telescopes are said to "listen" to space because...
1. they monitor sound waves
2. they detect radio waves
3. they detect electromagnetic waves
4. they detect only aural EM waves
Answer:
2 they detect radio waves
what is magnetic field right and left hand rule
Answer:
The Right Hand Rule, illustrated at left, simply shows how a current-carrying wire generates a magnetic field. ... The Left Hand Rule shows what happens when an electrical current enters a magnetic field. You need to contort your hand in an unnatural position for this rule, illustrated below
A meterologist made these observations one day:
• In the morning, anocean wave hit a shoreline every 15 seconds.
• In the afternoon, an ocean wave hit the shorlinie every 30 seconds.
Identify whether the ocean waves transferred more or less energy in the morning than in the afternoon.
Write your answer in complete sentences.
Answer:
They transfered more energy in the morning.
Explanation:
This is because, let me put this in simple words, you have more energy, you can run more laps around the track, right? This is the same with the waves. They have more energy, so they can crash aganst the shore more!
An eagle flying 10 meters per second swoops down to the ground to catch a snake speed velocity or acceleration
Answer:
Velocity because it has both magnitude (10m/s) and direction (to the ground).
Explanation:
Velocity can be defined as the rate of change in displacement (distance) with time. Velocity is a vector quantity and as such it has both magnitude and direction.
Mathematically, velocity is given by the equation;
[tex]Velocity = \frac{distance}{time}[/tex]
In this scenario, an eagle flying 10 meters per second swoops down to the ground to catch a snake. Therefore, this is an example of velocity.
How far will a force of 6 x 10^3N stretch a spring with spring constant 3 x 10^4 Nm-1 ?
Answer:
0.2m
Explanation:
F = 6 x 10^3N
k = 3 x 10^4 Nm-1
x = ?
from Hooke's law, F = kx
x = F/k = 6 x 10^3 ÷ 3 x 10^4 = 0.2m
HELP!!! I need to turn this in quickly :((
F = 6.0 x 10⁻⁸ N
Further explanationGiven
mass of 2 dump trucks = 1500 kg
distance = 50 m
Required
Gravitational force
Solution
Newton's Gravity Law:
[tex]\rm F=G.\dfrac{m_1.m_2}{r^2}[/tex]
with F = gravitational force,
G = gravitational constant,
m1, m2 = mass of object,
r = distance between two objects.
Input the value :
F = (6.67.10⁻¹¹N.m² / kg² x 1500²) : 50²
F = 6.0 x 10⁻⁸ N
