Answers
500x0.5=2.5 x effort
250= 2.5 x effort
effort = 250/2.5= 100N
Related Questions
which type of forces would be experienced by a sled that is being pulled by a rope (choose 4)
Answers
NEED HELP!!! IF YOU ANSWER ALL QUESTIONS I WILL GIVE YOU BRAINEST!!!!! 15 POINTS!!!!
1. How does Newton’s second law of physics apply to lifting weights?
A.
Lifting weights requires the proper form and net force.
B.
Without force or motion, the weights are an unbalanced force.
C.
It requires more force to move weights, and this builds muscles.
D.
Weights are an immovable object, and the force is provided by muscles.
2. Why would oxygen levels make a difference in athletic performance?
A.
Muscles need oxygen to function well.
B.
It is just one biometric that is studied.
C.
Oxygen is important for everyone, not just athletes.
D.
Athletes require less oxygen than those who are less active.
3. Which is an example of the study of physics and the human body?
A.
determining the optimum resting heart rate
B.
testing the impact of a car crash on the body
C.
calculating how to beat an existing sports record
D.
training warehouse workers on how to properly move boxes
4. The laws of motion do NOT apply to the human body.
A.
True
B.
False
PLEASE NO LINKS
Answers
Answer:
1 is A
2 is A
3 is B
4 is B
Explanation:
number three is a dead giveaway
Gravitational potential energy is just one type of stored energy.
t or f??
Answers
Answer: true because potential energy is stored in a object
Explanation:
a ball is thrown vertically down from the edge of a cliff with a speed of 5.2m/s how high is the cliff if it took 11s for the ball to reach the ground
Answers
[tex]\\ \sf\longmapsto h=ut+\dfrac{1}{2}gt^2[/tex]
[tex]\\ \sf\longmapsto h=5.2(11)+\dfrac{1}{2}(9.8)(11)^2[/tex]
[tex]\\ \sf\longmapsto h=57.2+4.9(121)[/tex]
[tex]\\ \sf\longmapsto h=57.2+592.9[/tex]
[tex]\\ \sf\longmapsto h=650.1m[/tex]
Wirte Different Methods of Transmission of heat?
Answers
Answer:;
Explanation:
difference between horizontal and vertical motions
Answers
Answer:
This is to say that the vertical velocity changes by 9.8 m/s each second and the horizontal velocity never changes. This is indeed consistent with the fact that there is a vertical force acting upon a projectile but no horizontal force.
Explanation:
21/33
A crane is lowering a 50 kg box. If the crane lowers the box at a
constant speed, what is the tension Fr in the cable?
Answers
Answer:
400N
Explanation:
Accurate _______ is needed in a valid experiment.
Hurry, I need help.
Answers
Answer: repeatable
Explanation: Accurate repeatable is needed in a valid experiment. I think
a car in tally at rest pics up and velocity of 72 km/h ^−1over a distance of 25m the acceleration of car is
Answers
Answer:
16 m/s^2
You find out the time first which is 1.25s
An automobile travels the first half of an 80.0 mi trip at 20.0 mi/h and the second half of the trip at 40.0 mi/h. What is the average speed for the entire trip?
Answers
This question involves the concepts of uniform speed motion and average speed.
The average speed for the entire trip is "26.67 mi/h".
First, we need to find out the total time taken for the entire trip. For that purpose, we will break the entire trip into two halves of uniform speed motion:
[tex]Total\ Time = t_1+t_2\\\\Total\ Time = \frac{s_1}{v_1}+\frac{s_2}{v_2}\\\\Total\ Time = \frac{40\ mi}{20\ mi/h}+\frac{40\ mi}{40\ mi/h}\\\\Total\ Time = 2\ h + 1\ h\\Total\ Time = 3\ h[/tex]
Now, the average speed for the entire trip will be:
[tex]Average\ Speed = \frac{Total\ Distance}{Total\ Time}\\\\Average\ Speed =\frac{80\ mi}{3\ h}[/tex]
Average Speed = 26.67 mi/h
Learn more about average speed here:
https://brainly.com/question/12322912?referrer=searchResults
The attached picture explains the concept of average speed.
Why are earthquakes and volcanic eruptions common in a convergent plate boundary?
Answers
Answer:
Much magma is generated at a converging plate boundary where subduction is occurring.
the energy of a photon is inversely proportional to its:
Answers
Answer:
Wavelength.
Explanation:
The measure of energy is straightforwardly corresponding to the photon's electromagnetic recurrence and subsequently, equally, is contrarily relative to the frequency. The higher the photon's recurrence, the higher its energy.
Hope this helps! :D
What two things do you need to know to calculate work
Answers
Answer:
Work equals to force times distance
Explanation:
the equation would be work=force*distance
NEED HELP!!! IF YOU ANSWER ALL QUESTIONS I WILL GIVE YOU BRAINEST!!!!! 15 POINTS!!!!
1. Imagine that you design running shoes for a living. Which biometric would be most useful?
A.
the average weight of a runner
B.
the number of runners in a popular urban area
C.
the points of impact when the foot hits the ground
D.
the distance that beginning runners attempt to finish
2. Mike is studying the differences between the body mechanics of swimmers in pools versus open water. What is his focus on?
A.
statics
B.
dualism
C.
statistics
D.
dynamics
3. What is the potential hazard of failing to use equipment correctly at the gym?
A.
It is poor gym etiquette.
B.
It can cause injuries or pulled muscles.
C.
Poor exercise habits can actually cause stress.
D.
The exercise will not release endorphins if you do it wrong.
4. Ira is concerned about his posture. He tests it by seeing how long he can hold good posture and finds that he feels the most discomfort in his back. What does that suggest that he needs to do?
A.
Keep a neutral spine.
B.
Place his hands on his hips.
C.
Arc his back when he walks.
D.
Tuck his chin close to his chest.
PLEASE NO LINKS
Answers
Answer: Like marathon runner is about 140 pounds
Explanation:
How many newtons does a 5-kg backpack weigh on Earth?
Answers
which nuclear decay emission consists of energy only?
Answers
Answer:
Gamma radiation
Explanation:
Gamma radiation is a decay emission of pure energy.
convert -13°F into (a) °C (b) kelvin
Answers
Answer:
-25ºC
Explanation:
can you predict a dark room is empty or not with the help of sound? how?
please help me ।
50 points
Answers
Answer:
Sound waves can reflect off surfaces. We hear sound reflections as echoes. Hard, smooth surfaces are particularly good at reflecting sound. This is why empty rooms produce lots of echoes.
Soft, rough surfaces are good at absorbing sound. This is why rooms with carpets and curtains do not usually produce lots of echoes.
Explanation:
With this information, you'd be able to come up with your answer,
Hope this helps!
yea, by sound enegy example if uh speak a your sound knock on the object and react to your ears
how can you reduce the percentage uncertainty in measurements that you make?
Answers
Two point charges are separated by 6.4 cm . The attractive force between them is 10 N . Suppose that the charges attracting each other have equal magnitude. Rearrange Coulomb's law and find the magnitude of each charge. Express your answer to two significant figures and include the appropriate units.
Answers
Answer:
Two point charges are separated by 6.4 cm . The attractive force between them is 10 N .
units.
Explanation:
Explain how solar and lunar eclipse occur with the help of a labelled diagram.
Answers
Answer:
a solar eclipse occurs when the moon passes in front of the sun,blocking it out partially or completely. the eclipse results in parts of the earth being covered in the shadow of the moon. a lunar eclipse occurs when the moon passes directly behind earth and into its shadow.
Explanation:
if you enter a room where there is a rotten egg how can you tell
Answers
Answer:
You would smell it.
hello, may you please help me
Calculate the percentage of water of crystallisation in Na2CO3•10H2O
Answers
Answer:
62.9%. The molar mass of sodium carbonate is 106 grams per mole. Each water molecule adds another 18.0 grams per mole.
PLEASE HELP ME!! WILL MARK BRAINLIEST!!!
How many moles of glucose, C6_H12_O6, are in 300 g of glucose? Show your work.
Answers
180.15588 g/mol
. Next divide the given mass of glucose by its molar mass. 300
g C
6
H
12
O
6
×
1
mol C
6
H
12
O
6
180.15588
g C
6
H
12
O
6
=
2 mol C
6
H
12
O
6
(
1.7
rounded to one significant figure)
1) how can you show that atmospheric exerts pressure?
2) how do you measure the volume of an irregular solid ? explain an experiment with diagram.
Answers
Answer:
1. While boiling replace the cap and allow it to cool. Vapours inside condense and form water creating vacuum above them. Observation - The can crumbles due to air pressure from outside. This proves that air exerts pressure.
2. Measure the volume of the liquid displaced when the object is submerged. Measure the initial volume of water in graduated cylinder. Submerge the irregular object. Measure the final volume of the water.
— The difference between the initial volume and the final volume is the volume of the object.
hope can help ^_^
what work is done when a person pushes a refrigerator across the floor 12m using 480N of force ?
Answers
Answer:
W = 5760 J
Explanation:
Force (F) = 480 N Distance (d) = 12 m Work (W) = ?Use the formula:
W = F * dReplace with the data, and solve:
W = 480 N * 12 mW = 5760 JThe work done was 5760 Joules.
Greetings.
4cm cubed = ?m cubed
Answers
Answer:
[tex]{ \rm{1 \: {cm}^{3} = \frac{1}{100 {}^{3} } \: {m}^{3} }} \\ \\ { \rm{4 \: {cm}^{3} = \frac{4}{1000000} \: {m}^{3} }} \\ \\ { \boxed{ \rm{ = 0.000004 \: {m}^{3} }}}[/tex]
Define periodic motion
Q 1.1 Verify full system functionality.
Q 1.2 Document findings, and actions.
Q 1.3 Test the theory to determine the cause of the problem.
Q 1.4 Identify the problem.
Q 1.5 Establish a theory of the cause.
Answers
Answer:
Q11. verifying full system functionality confirms that you have solved the original problem and ensures that you have not created another problem while repairing the computer.
Give a short introduction to alternative energy
Answers
Answer:
Alternative energy is energy sources other than fossil fuels, including renewable sources and nuclear energy. However, nuclear energy is not classified as a renewable energy source, because it is mined from uranium and thorium elements, which cannot be replenished. Hoped this helped!!!
1)
The red arrow is pointed at different locations of an atom of nitrogen Where is it pointing to the GREATEST concentration of
atomic mass?
A
B.
В
C
Answers
Answer:
A) A (displays the nucleus)
The Nucleus holds a majority of the mass within an atom