Answer:
Explanation:
F = ma
m = F/a
m = 107.2/1.6 = 67 kg
so Naoki's mass must be the total mass - mass of the bike
so her mass is 67 - 9 = 58 kg...B
Total distance does not take into account the direction of the object, but displacement always includes direction.
Question 1 options:
True
False
Answer: True
Explanation:
Distance is a scalar, which means it has no direction. It is the sum of the entire path traveled.
Displacement is a vector, which means it does have direction. It is the shortest path from the start to the end. It is defined as [tex]x_f-x_i[/tex].
Describe the kinetic molecular theory
Which of the following is the potential energy of a roller coaster cart with a mass of 250 kg as it sits atop the hill 20 m high before beginning the drop back downward at 5 m/s?
a
25000 J
b
1250 J
c
5000 J
d
49000 J
Answer:250000
Explanation:
Why is endurance training important to you?
Answer:
keeps your circulatory system healthy
Explanation:
Answer:
Explanation:
Endurance training important to me because It is a really good for staying fit but I also like cardeo.
A construction worker pushes a wheelbarrow 15 m with a horizontal force of 17 N. How much work is done by the worker on the object?
Answer:
The work done by the worker on the object is 255 J
Explanation:
Work is defined as the force that is applied on a body to move it from one point to another.
When a net force is applied to the body or a system and this produces displacement, then that force is said to perform mechanical work. This work can be positive if the system gains energy or negative if the system loses energy.
In the International System of Units, work is measured in Joule. Joule is equivalent to Newton per meter.
The work is equal to the product of the force by the distance and by the cosine of the angle that exists between the direction of the force and the direction that travels the point or the object that moves.
In this case, the angle between the force and the displacement is 0 degrees. Then the cosine of 0 degrees will have a value of one. So work is calculated as the multiplication between force and distance:
W= 17 N* 15 m
Solving:
W= 255 J
The work done by the worker on the object is 255 J
An object moving with a speed of 35 m/a and has a kinetic energy of 1500j, what is the mass of the object
Explanation:
Speed or velocity (V) = 35 m/s
Kinetic energy (K. E) = 1500 Joule
mass (m) = ?
We know
K.E = 1/2 * m * v²
1500 = 1/2 * m * 35²
1500 * 2 = 1225m
m = 3000 / 1225
m = 2.45 kg
The mass of the object is 2.45 kg
Hope it will help :)
Why does the layer of glass in a solar cell need an antireflective coating?
A. To maximize the energy absorbed by the solar cell
B. To help the cell conduct the charge that is produced
C. To give the layer a negative charge
D. To give the layer a positive charge
the answer is A
Answer:
The Anti Reflective Coating on a solar cells helps to increase the amount of light absorbed into the cell. This anti reflective coating is very much needed as the reflection of a bare silicon solar cells is over 30%. For the thin AR Coating, silicon nitride or titanium oxide is used.
Explanation:
hope this help:)
What is nuclear energy
What work is done when a person lifts a 1.6 kg package and places it on a shelf 2.4m high?
Answer:
Explanation:
Work is the dot product of force and distance
[tex]W = F*d=Fd*\cos(theta)[/tex]
The only force acting on this box is the force of gravity (weight) which is mass*gravity
F = (1.6)(9.8) = 15.68N
The angle is the angle between the force and distance. In this case it is zero, therefore cos(Ф) = 1
[tex]W=15.68*2.4=37.6J[/tex]
What is the weight of a dog that has a mass of 47.0 kg?
Answer:
while we often confuse mass with weight, 47 kg is 47 x 9.8 = 460.6 Newtons. 9.8 is acceleration of gravity in m/sec/sec
What would you have loved to press the pause button on so you could go deeper
Answer:
~Banana Fish~
The speed of light is 3.0 x 10^8 m/s. If microwave has a wavelength of 350 nm, what is its frequency?
Answer:
the park and ride at the park and ride at
Explanation:
the chicken and I don't know if you can make it
Jenny loves puffed rice cereal. As she is pouring the cereal, two little
pieces of cereal each with equal charges of 1.85 x10-18 coulombs
fall into the bowl 0.025 meters apart. Use Coulomb's Law to find the
electrostatic force between them. (Remember, Coulomb's constant
is 8.99 x10° N*m2/C2)
A-4.9 x 1023 N
B-6.2x 10-15 N
C-9.0 x 10-3 N
D-2.5 x 10-23 N
Answer:
4.9 x 10-23 N
Explanation:
I took the test
Answer:
4.9 x 10-23
Explanation:
I just took the test too its
Akito pushes a wheelbarrow with 800 W of power. How much work is required to get the wheelbarrow across the yard in 12 s? Round your answer to the nearest whole number.
It takes
J of work to get the wheelbarrow across the yard.
Answer:
9600
Explanation:
Answer:
Hey... your answer is 9,600
Explanation:
Hope this helps :)
Here is prove just in case...
Best of luck <3
Which of the following is an example of facilitated diffusion?
Heart Rate During Aerobic Activity?
Answer:
It is recommended that you exercise within 55 to 85 percent of your maximum heart rate for at least 20 to 30 minutes to get the best results from aerobic exercise. The MHR (roughly calculated as 220 minus your age) is the upper limit of what your cardiovascular system can handle during physical activity.
(I think) ¯\_(ツ)_/¯
Determine the stopping location of the prize wheel. At this moment it is centered on the number 5. It is spinning with an energy of 6.19 J. It is slowing at a rate of 1.800 rad/s/s.
The disk is made from a wood with a density of 478.0 kg/m^3. The disk is 29.0 mm thick and has a radius of 33.0 cm.
Predict the angular displacement it will go through and predict the number on which the wheel will stop. To be safe, you will also get one number the right and to the left of the number you chose.
The wheel will spin clockwise. The wheel goes from 1 to 36.
Answer:
Thanks for the 50 points. Answer eill be always 29.0m
The Sankey diagram below shows the energy transfers in a computer. 100 J of energy are input. It is carried to the computer by
What one word completes the sentence?
The current atomic model has a ?
Answer:
Atoms have protons and neutrons in the center, making the nucleus, while the electrons orbit the nucleus. The modern atomic theory states that atoms of one element are the same, while atoms of different elements are different. What makes atoms of different elements different?
Answer:
Its C.
Explanation:
I just got it right on my test.
The image shows how the moon looks during the lunar cycle. The moon will look this way again in about ?
Which of the following statements are TRUE about nuclear energy?
A.Nuclear energy can result from splitting large atoms.
B.Nuclear energy can result from combining small atoms.
C.Nuclear energy is how the sun and stars make energy.
D.All of the above.
Answer:
d
Explanation:
what improvement that can be made in a siphon so that the rate of liquid transfer is higher?
Answer:
You could raise the height of the top of the siphon or make the size of the hose being used bigger.
Explanation:
I hope this helps.
Which three rocky planets have atmospheres
Kerry drops her iPhone accidentally as she is standing on an overlook. How fast is the iPhone moving after 3 seconds?
Answer:
29.4 m/s.
Explanation:
v=gt=9.8⋅3=29.4
I believe this is correct... If not, close.
Question 12 (2 points)
Which elements are least reactive?
metals
halogens
actinides
noble gases
Answer:
noble gases
Explanation:
A bowling ball has a mass of 50 kg and is traveling with a velocity of 18 m/s 4 points
down the lane. How much momentum does it have?
momentum= mass × velocity
p= 50×18
momentum= 900 kg m/s
A man driving a car sees a deer crossing the road and brakes the car with a force of 100 N. The car stops after traveling 5m. What is the work done on the car?
Answer:
Workdone = 500Nm
Explanation:
Given the following data;
Force = 100N
Distance = 5m
To find the workdone;
Workdone is given by the formula;
[tex] Workdone = force * distance[/tex]
Substituting into the equation, we have
[tex] Workdone = 100 * 5 [/tex]
Workdone = 500Nm
HEEEEEEEEELLLLLLLLLLPPPPPPPPPPP
Right
Hips
Balance. Eyes. Elbow. Follow-Through -- when practicing.
Right leg
To the person you passing to
How does Earth's movement affect how the Sun is seen? The Sun is stationary, but Earth's rotation makes it appear to move east to west across the sky. Earth's rotation around the Sun makes the Sun appear to move across the sky every 365 days. The Sun and Earth move around each other, so the Sun moves east to west across the sky. The Sun is stationary, but Earth's clockwise rotation makes it appear to move west to east across the sky.
Answer:
The manner in which the Earth's movement affect how the Sun is seen is;
The Sun is stationary, but Earth's rotation makes it appear to move East to West across the sky
Explanation:
The Earth's movement affect the way the Sun is seen
The Sun appears to rise in the Eastern part of the sky and continues in motion till the it sets at the Western part of the sky
However, the Sun does not actually move relative to the Earth as seen in the sky. The observed motion of the Sun is due to the counterclockwise rotation of the Earth about its axis
Therefore, the Earth's movement affect the way the Sun is seen by making the Sun appear to move across the sky from East to West
Answer:
The sun stays still but the rotation of the earth makes it look like it goes east to west.
Explanation:
9. True or False: Sawmills and gristmills are machines that do not need
access to a water source.*
2 points
Pls help
Answer:
true can i get brainliest :)
Explanation: