Answer:
Time = 1.413 seconds.
Explanation:
Given the following data;
Force = 883N
Distance = 0.6m
Power = 375 Watts
To find the time;
First of all, we would find the work done by Antonio.
Workdone = force * distance
Workdone = 883 * 0.6
Workdone = 529.8 Joules.
Now, to find the time;
Time = workdone/power
Substituting into the equation, we have
Time = 529.8/375
Time = 1.413 seconds.
Therefore, it took her 1.413 seconds to complete the push-up.
Two trains are traveling between city A and city B a distance of 4000 kilometers (km). The regular train travels at a speed of 80 kilometers per hour (km/h). The express train leaves at the same time on a parallel track and travels at 100 km/h. The formula for speed (S) is S=DT where S is speed, D is distance and T is time. How much earlier will the express train arrive at city B? * 10 points
Answer:
10 hours earlier than regular train
Explanation:
In this case you are already giving the expression to be used which is:
S = D/t (1)
The problem is giving us the data of the speed of both trains, and we also know the distance between City A and B, which is 4000 km, therefore, we just need to solve for t in the above expression for both trains, and then, do the difference between their times and see how much earlier the express train arrives.
Solving for t, we have:
t = D/S (2)
For Train 1 (The regular):
t₁ = 4000 / 80
t₁ = 50 h
For Train 2 (Express):
t₂ = 4000 / 100
t₂ = 40 h
Now, as expected express train arrives earlier, now let's see how much:
T = t₁ - t₂
T = 50 - 40
T = 10 hTherefore, Express train arrives 10 hours earlier than regular train.
Hope this helps
A 2750 kg helicopter flies horizontally at constant speed. Air resistance creates a 7510 n backward force. What is the magnitude of the lift force created by the propellers
Answer:
Explanation:
Let lift force F be created by propellers at angle of Ф with the horizontal .
The vertical component of this force will balance the weight of helicopter and horizontal component will balance the air resistance .
F sinФ = mg = 2750 x 9.8 = 26950 N
F cosФ = 7510 N
Squaring and adding ,
F² = 26950² + 7510²
= 726302500 + 56400100
= 782702600
F = 27976.82 N .
a body is thrown at an angle 30°to the horizontal with kinetic energy 40J.atbthe highest point of its motion the kinetic energy will be?
Need help ASAP! Thank you
Answer:
The answer is never
Explanation:
If 2 balanced forces are pushing on it then the speed will not change
A mouse ran 25 meters in 5 seconds, stopped for 10 seconds to eat a piece of cheese, and finally ran another 5 seconds a distance of 15 meters to its home. Calculate the average speed of the mouse.
Answer:
It ran at an average of 2 meters per second.
Explanation:
Which is a benefit of strength training? O Decreased blood flow to muscles O Improved oxygen delivery Flexibility of tendons and joints O Increased lean muscle tissue
Answer:
Increased lean muscle tissue.
Explanation:
I hope this helps :) Tell me if I am wrong!
Answer:
Increased lean muscle tissue.
Explanation:
i took the test!
Un prisma rectangular con un volumen de 80 m^3 se sumerge hasta la mitad en agua, calcular la fuerza de empuje que recibe.(rho_(del agua)=1000 kg/m^3)
Answer:
400 kN
Explanation:
El principio de Arquímedes establece que, cuando un cuerpo está total o parcialmente sumergido en un fluido, experimenta un empuje hacia arriba que es igual al peso del fluido desplazado.
Dado que;
Volumen del bloque = 80m ^ 3
Densidad del agua = 1000 kg / m ^ 3
Empuje hacia arriba = 1/2 * 80 * 1000 * 10
Empuje hacia arriba = 400 kN
A snowball is rolling down a grassy hill. Determine what force is causing the object to slow down or speed up. Sketch a free-body diagram, including arrows, force values, and label be sure the label the forces appropriately.
Answer:
Rolling Friction (round object on a flat surface) Speeding up.
Explanation:
Gravity continually pulls something such as a table, roster, or person down from the hill. Thus, when you bounce, gravity makes you to arrive on the territory. Friction, however, doesn't pull something down. Friction, however, doesn't pull something downstairs. ... Also, friction always operates identically to the surface in connection because of the sliding movement.
Please Help! WILL GIVE BRAINLIEST IF ANSEWR IS CORRECT!!!
(See picture for question.)
Gravity increases when mass increases and distance decreases. Gravity decreases when mass decreases and distance increases.
Answer:
graity decreses the further you get from earth so ifmas decreses gravity will be les if mas increses it will de mor efective and it distence increses gravity will decrease if distence decreses gravity will increase
Explanation:
‼️‼️EMERGENCY ITS DUE SOON‼️‼️
A box weighing 2000N is sliding across a cement floor. The force pushing the box is 500N, and the coefficient of sliding friction between the box and the floor is 0.20. What is the acceleration of the box? 
Answer:
1.96m/s^2
Explanation:
According to Newtons second law;
F = ma
a = F/m
a = nR/m
a = nmg/m
a = ng
n is he coefficient of friction = 0.2
g = 9.8m/s^2
a = 0.2 * 9.8
a = 1.96m/s^2
Hence the acceleration of the box is 1.96m/s^2
Transforme: a) 2 km em m b) 1,5 m em mm c) 5,8 km em cm d) 0,4 m em mm e) 27 mm em cm f) 126 mm em m g) 12 m em km
Answer:
a) 2000 m
b) 1500 mm
c) 580000 cm
d) 400 mm
e) 2.7 cm
f ) 0.126 m
g) 0.012 km
Explanation:
Transform
a) 2km to m
1 km = 1000m
hence : 2 km = 2 * 1000 = 2000 m
b) 1.5m to mm
1 m = 1000 mm
hence: 1.5 m = 1.5 * 1000 = 1500 mm
C) 5.8 km to cm
1 km = 100000 cm
hence ;5.8 km = 5.8 * 100000 = 580000 cm
D) 0.4 m to mm
1 m = 1000 mm
hence; 0.4 m = 0.4 * 1000 = 400 mm
E) 27 mm to cm
1 mm = 0.1 cm
hence ; 27 mm = 27 * 0.1 = 2.7 cm
F) 126mm to m
1 mm = 0.001 m
hence ; 126 mm = 126 * 0.001 = 0.126 m
G) 12m to Km
1 m = 0.001 km
hence ; 12 m = 12 * 0.001 = 0.012 km
show all work. a bus travels 100km/hr. it takes 6 hours to get from seattle to portland. how far away are the two cities?
Answer:
There would be 600km
Explanation:
A dwarf planet is likely to
O A. have a bright tail and a glowing nucleus
O B. have chunks of rocks and that never clump together
O C. have a liquid hydrogen layer that surrounds a solid core
O D. have objects similar in mass orbiting nearby
Answer:
a have a bright tail and a glowing nucleus
A dwarf planet is most likely to have a bright tail and a glowing nucleus. Thus, the correct option is A.
What is a dwarf planet?A dwarf planet is a small planetary-mass object which is in direct orbit that of the Sun, it is smaller than any of the eight classical planets however it is still a world in its own right.
The prototypical dwarf planet is Pluto. The dwarf planets is that the geologically active bodies, which is an expectation that was borne out in 2015 by the Dawn mission to Ceres and the New Horizons mission to Pluto.
Dwarf planets always being in orbit around the Sun. They are not being a satellite of a planet. They having a mostly round shape due to its own gravity. They also have not cleared its neighboring region of debris.
Therefore, the correct option is A.
Learn more about Dwarf planet here:
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Question 3 of 10
Which planet has the largest gravitational force?
A. Mercury
B. Uranus
C. Jupiter
D. Saturn
SUBMIT
These pairs of forces are known as ____________-reaction pairs because one pushes against the other with an equal but opposite force.
Two students are running in a race. Student 1 has more kinetic energy than student 2. Who will win the race?
What is the intensity of the electric current in one coil, if the number of the coils is 10, length of the coil is 5m, and magnetic induction is 8T?
Answer:
I think the answer is D...
Explanation:
Is this spring or winter?
THE RIGHT ANSWER WILL RECEIVE A BRAINLESS AND POINTS AND THANKS!!!
THE RIGHT ANSWER WILL RECEIVE A BRAINLESS AND POINTS AND THANKS!!!
What is the fundamental frequency of a mandolin string that is 42.0 cm long when the speed of waves of the string is 329 m/s?
Answer:
391.67Hz
Explanation:
The fundamental frequency formula in string is expressed as;
Fo = V/2L
V is the velocity of the wave = 329m/s
L is the length of the string = 42cm = 0.42m
Substitute
Fo = 329/2(0.42)
Fo = 329/0.84
Fo = 391.67Hertz
Hence the fundamental frequency of a mandolin string is 391.67Hz
Which is the first step in the process during the formation of molded fossils? A Sediment hardens into rock. B Sediment is eroded from rock. C Organisms are buried under sediment.
The first step in the process during the formation of molded fossils is that the sediment is eroded from rock. Thus, the correct option is B.
What is Fossil formation?Fossils are important as they provide important evidence for the evolution and the adaptation of plants and animal species to their environments. Fossil evidence helps in providing the record of how creatures have evolved and how this process can be represented through the help of a tree of life, showing that all the species are related to each other.
Four types of processes which contribute to the formation of a fossil include mineralization, carbonization, encrustation, and distillation. They occur once an organism has become fully trapped within the surrounding sediment, and it primarily depends up on the mineral composition of the silt and water.
Therefore, the correct option is B.
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What would be the final temperature if you mixed a liter of 40C water with 2 liters of 20C water?
Answer:
I found
33 ∘ C
Explanation:
i hope this helps :)
Which of the following is an example of an opposing force?
A.Gravity pulling a ball down a hill
B.Wind blowing a leaf off of a tree
C.Gravity holding a rock still on the ground
D.Water pushing against someone as they wade through a pool
PLEASE HELP!!! ✨✨✨✨1. Identify a team or group you participated with for your physical activity. Describe how you
became involved, two positive ways you behaved that benefited your team and that were
a positive influence on the game.
2. How can participation in team sports improve your overall fitness?
How did you adjust the strategy for the team sport that you played?
4. Describe the positive outcomes that might result from including players with less ability or
even a disability on your neighborhood team.
5. Describe the alternative sport experience you completed and why you chose it.
6. Identify one individual or dual activity and one alternative or extreme activity you chose to
participate in and how you used offensive and defensive strategies in the game.
7 Did you meet your goal throughout this activity log? Why or why not?
Answer:
1.) Identify a team or group you participated with for your physical activity. Describe how you became involved, two positive ways you behaved that benefited your team and that were a positive influence on the game.
On February 12th I ran with my sisters. One positive behavior was that I did not go slow, and I kept with the pase. Another positive behavior was when the other person got tired or fell, the other two people helped them up. Some ways that I influenced the group was, I pushed the other people to do good and I also pushed them to not give up. Another way that I influenced the group was, I did not hold them down, like when they sped up, I sped up.
2.) How can participation in team sports improve your overall fitness?
It can improve my fitness by showing me that if they can do it, so can I and if I do not, it is not because I cannot, it is because I will not. Another way that it can improve my fitness is, if we start to slow down, we can tell each other to keep going and if we keep going, then our skill ability level will go up and that is how we can get more fit.
3.) How did you adjust the strategy for the team sport that you played?
I said that we should go this far this day and then we can get this far this week. I also said that if we go this fast then we can get this far. So really, I just made goals to help improve our ability,
4.) Describe the positive outcomes that might result from including players with less ability or even a disability on your neighborhood team.
We all go to the pase that everyone can go at first and then work our way up as a group and if one person needs to go slower, then we all go slower and keep going together.
5.) Describe the alternative sport experience you completed and why you chose it.
I completed running and biking because I really love biking and I am passionate about it because it is very relaxing and calming. I also completed running because I wanted to have something that I could rotate with so that I did not get tired of biking.
Explanation:
(I am sorry that I could only come up with 5 out of the 7 but I hope this helps you)
What must occur within a magnetic material before it exhibts magnetic properties?
a)The material must be of a specific size
b)The material must be charged with electricity
c) The magnetic domains inside the material must be aligned
d) The magnetic material must be created artificially
(real answers only or you will be reported. Thanks to those who help).
Which of the following tend to orbit the sun in long, narrow ellipses?
A. planets
B. asteroids
C. comets
D. moons
Answer:
C
Explanation:
What are the energy transformations for a battery-powered radio?
Answer:
hope that helps
Explanation:
sound energy to chemical energy.
electrical energy to sound energy.
sound energy to electrical energy.
plz help will mark the brainliest
Answer:
yesssssssssssssssssssssssssssssssssssss
HELP!! ILL MARK BRAINLIEST TO ANYONE WHO HELPS ME PLEASE I NEED TO TURN IN SOON!!
Answer:
6 seconds?
Explanation:
I'm gonna guess but it might be
0 - 1 and 3 - 4.5
Can someone please help me?
Please also explain how you got the net force, thank you.
The questions are in the picture i attached below.
Answer:
unbalanced 1st answer
right 2nd answerAnswer:
hi, your answers are correct
Explanation:
3. Bart ran 5000 meters from the cops and an average speed of 10 meters/second before he got
caught. How long did he run?
Answer:
8 minutes and 20 seconds
Explanation:
5000/10 to get the number of seconds, which is 500, then you convert 500 seconds to minutes and you get 8 minutes and 20 seconds