Answer:
75Watts
Explanation:
Given parameters:
Time = 12s
Force applied = 20N
Height = 45m
Unknown:
Power output = ?
Solution:
Power is defined as the rate at which work is done.
It is mathematically expressed as;
Power = [tex]\frac{work done}{time}[/tex]
Work done = force x distance = 20 x 45 = 900J
Power = [tex]\frac{900}{12}[/tex] = 75Watts
4. A hiker leaves camp and using a compass walks 4 km East, 6 km South, 3 km East, 5 km North, 10 km West, 8 km North and 3 km South. What is his total displacement?
Answer:
Because the hiker walked directly west and then directly north the two legs of the hike forms a right triangle. Therefore we can use the Pythagorean Theorem to solve this problem.
c=5
The hiker is 5km from camp and should head in a generally south-east direction
please help ASAP
a substance of mass 10kg with the dimension as 5cm by 4cm by 10cm. What is the density of true substance?
Answer:
5cm by 4cm by 10cm = 200
200 / 10 = 20
20 :>
Memories
by matthew smith
I remember when I met you
the smile on your face,
Seems like a million years ago -
a different time and place
I remember when I kissed you
the warmth inside my heart,
I thought it'd last a lifetime
I swore we'd never part
I thought about the future
I started making plans,
Forever you'd be my woman
forever I'd be your man
We went together places
so that everyone could see,
The women that I want to share
the rest of my life with me
I told you that I loved you
I told you that I cared,
I told you if you were falling
just look back and I'd be there
I know I didn't have all the answers
sometimes I only guessed,
But, through it all I have to say
"I always tried my best"
I wasn't always perfect
I wasn't always right,
I know sometimes I wasn't
even worthy in your sight
I know I took for granted
the love you had to share,
All I ever wanted was
for you to know I cared
Our lives have changed directions
as sometimes lovers do,
Often time and change
and pave a path that's new
Sometimes I often wondered
just what lies ahead,
Sometimes I'd like to turn back time
and take back what I said
We've both gone different places
we've both gone different ways,
I know sometimes I let you down
when trouble came our way
I know sometimes I did things
you didn't comprehend,
But, through the years and all the tears
our memories will never end........
Answer:
Its ok but the answer is C
Explanation:
Calculate the pressure exerted by mercury column of 76cm high at its bottom. Given that the density of mercury is 13600kg/m³ and g=9.8 m/s².
Answer:
P = 101292.8
Explanation:
Use
Pressure p = H D g
H = height ( in metric)
D = density ( in metric )
g = gravity
So
H = 76 cm = 0.76 m
D = 13600 kg/m3
And g = 9.8
P = HDg
= 0.76× 13600×9.8
= 101292.8 pascal
Or = 1.012928 × 10^5
Answer:
sudeep is correct hope it's help you have a great day ☺☺keep smiling be happy stay safe
If you know these plz help me out:)
Answer:
1. Attacking the person
2. Stress fractures
Explanation:
If this helps this is on my opinion and I need do my best to help you:)
Question: What is this? (look in image attached)
Answer:
C. all of the above.
Explanation:
up at the top it says solar power bank.
in the boxes below it says LED flashlight and solar energy.
it is all of the above.
water cannot be used in barometer.why.
Answer:
water cannot be used as barometric liquid because it's density is lower than Mercury . water's density is 1000 gram per cubic meter. hence it requires a barometer whose height is around 11 meter
Answer:
the above answer is correct hope it's help you have a great day ☺ ☺ keep smiling be happy stay safe
which object has the most kinetic energy a truck going 100 miles per hour or a motorcycle going 100 miles per hour
Answer:
The truck
Explanation:
Kinetic energy is directly proportional to mass. Since the truck has more mass, it will have more energy.
3. When should we perform stretching in relation to exercise (before, after or during), and what type of stretching should we be performing?
There is some evidence that regular static stretching outside periods of exercise may increase power and speed, and reduce injury. The best time to stretch is when the muscles are warm and pliable. This could be during a yoga or pilates class, or just after exercising.
which two changes would increase the electric force between two charged particles
In electrostatics, the electrical force between two charged objects is inversely related to the distance of separation between the two objects. Increasing the separation distance between objects decreases the force of attraction or repulsion between the objects.
hope this helped
PLEASE HELP FAST!!!
WILL MARK BRAINLIEST!!!!
This is a Earth Science course 4.02
2. Mariner 4 and 9 and Viking 1 and 2 probes needed enhanced cameras and wireless communication equipment to take images of Mars's surface and send them back to Earth. According to the video, how did improving our technology lead to new discoveries about Mars?
3. Using internet resources, describe how advances in imaging and wireless communication for space exploration have led to changes in imaging devices and communication on Earth.
4. Mars Odyssey and Mars Express required spectrometric equipment that could analyze Mars's atmosphere and surface composition and temperatures. Using internet resources, describe some home or business technologies that use spectrometric equipment to analyze atmosphere or temperature.
5. Using internet resources, research one space probe described in the video. Describe its goals and justify its purpose by explaining how it helped advance our understanding of the universe.
Answer:
1.It improved by using the Mars survey probe, that took a portrait of the planet that helped us see the climate of Mars.
Explanation:
I watched the video.
In any ecosystem_______, are the point of entry for new energy
Answer:
The answer is Producer. Hope this helps!
Answer:
Producer
Explanation:
They keep the food chain stable... without producers there wouldnt be and animals. They are the key to the food chain.
Can an object have a speed of zero while it's acceleration is not zero
Density differences in different materials are able to change the _____________ of a wave.
Amplitude
Crest
Speed
Trough
Answer:
speed
Explanation:
Two pieces of metal with exactly the same mass are placed on a surface in bright sunlight. The temperature of the 1st block increases
by 3°C while the temperature of the 2nd increases by 8°C. If the specific heat of the 2nd block is 0.24 J/g-K, what is the specific heat of
the 1st block?
A)
0.3 /g-K
B)
0.64 J/g-K
1.2 J/g-K
D)
1.56J/g-K
Answer:
The specific heat of the 1st block is B. 0.64 J/g-K
Explanation:
Answer:
B
Explanation:
it is the specific heat
Why magnet is more powerful in poles than middle?
Answer:
The magnetic force or attraction is is greater where the field lines are crowded. Since all the magnetic field lines generate from the poles, the crowd of field lines is maximum near pole.
An orange of mass m falls into a wagon. Assume the orange experiences upward acceleration magnitude a
when it comes in contact with the wagon.
What is the correct expression for the normal force magnitude Fn exerted on the orange?
Answer:f^n=m(a+g)
Explanation:khan academy said
PLEASE HELP!
Picture 1: Draw the force diagram for Mı if there is
friction on the table.
Picture 1: Draw the force diagram for M4 if there is
friction on the table.
Answer:
When a body is placed on a table top, it exerts a force equal to its weight downwards on the table top but does not move or fall. (i) Name the force exerted ...
In the middle of a thunderstorm, a lightning bolt flashes. It takes Roberto 5 seconds to
hear the thunder afterwards. How far is the source of lightning from Roberto? The temperature is 22° C.
Speed of sound at 22°C = ?
d = ?
You will be reported if you didn't answer properly
Answer:
v = 344.1 m / s
d = 1720.5 m
Explanation:
For this problem we must calculate the speed of sound in air at 22ºC
v = 331 RA (1+ T / 273)
we calculate
v = 331 RA (1 + 22/273)
v = 344.1 m / s
the speed of the wave is constant,
v = d / t
d = v t
we calculate
d = 344.1 5
d = 1720.5 m
the diagram below shows different weights on the see-saw. Will the see-saw move?
Answer:
yes it will
Explanation:
As the net torque on the see-saw is not equal to zero, the see-saw in the given diagram will move.
What is torque?The force that can cause an object to rotate along an axis is measured as torque. In linear kinematics, force is what drives an object's acceleration. Similar to this, an angular acceleration is brought on by torque.
As a result, torque can be thought of as the rotational counterpart to force. Torque is referred to using a variety of terms, including moment and moment of force. The moment arm or lever arm is the measurement of the separation between the point of application of force and the axis of rotation.
The net torque on the see-saw = 3 N × 1.20m - 8 N × 0.50 m
= - 0.4 N-m.
As the net torque on the see-saw is not equal to zero, the see-saw move will move.
Learn more about torque here:
https://brainly.com/question/25708791
#SPJ2
How does the value of gravity affect the flight of the ball?
Answer:
if the gravity is high it will push down
if the gravity is low it will float and eventually come down
Explanation:
(c) Why is the telescope adjusted for a distant object in a spectrometer
Answer:
The telescope is adjusted to receive parallel rays by turning it towards a distant object and adjusting the distance between the objective lens and the eyepiece to get a clear image on the cross wire.
The telescope is turned towards a far-off object, and the distance between the objective lens and the eyepiece is adjusted to produce a clear image on the cross wire.
What is telescope?A telescope is a tool for creating enlarged views of far-off things. The telescope is without a doubt the most significant research tool in astronomy. It offers a way to gather and examine radiation coming from astronomical objects, even those at the edge of the cosmos.
When Galileo used the telescope to investigate alien bodies in the early 17th century, he revolutionized astronomy.
Magnification tools had never been employed for this purpose before until that point. The distance between the objective lens and the eyepiece is adjusted to provide a crisp image on the cross wire as the telescope is pointed towards a distant object.
Learn more about telescope here:
https://brainly.com/question/556195
#SPJ2
Please answer science question!!!
Answer:
from the sea towards the land
Answer:
sea to land
Explanation:
because the tide is coming in
A teacher walks back and forth in front of the room during a lesson. He starts at one end of the desk and walk from the door to the window a distance of 4.0m in 5 s. Then he stops, turn around and walk 2.0 m back toward the door in 3 s. He stops here for 10 s and then walk 3 meters toward the door in 6 s. Deduce the average speed of the teacher over the entire 24 s interval?
Answer:
0.375 m/s
Explanation:
The average speed of an object or a body is given by:
total distance traveled/total time taken
In the case of the teacher who walked back and fort:
Total distance traveled = 4.0 + 2.0 + 3 = 9 meters
Total time taken= 24 s
Hence,
Average speed of the teacher = 9/24
= 0.375 m/s
1. What is the pull that all objects exert on each other?
2. What is a push or pull that acts on an object?
3. Can objects going in different directions at the same speed have the same velocity? Why or why not?
4. If 1 car is going faster than another traveling in the same direction, can they have the same velocity? Why or why
not?
5. Explain the last part of the 3rd Law, for every action there is...?
6. 1st Law- an object at rest will remain at rest unless...?
7. If 2 objects are exerting a force on each other and theydon't move, the forces must be...?
Answer:
Im pretty sure 1 is gravity, 2 is force
Explanation:
give me 1 example of complete inelastic collision
i hope it helped thanks
. How much power is used to move a 5 kg mass 28 meters in 8 seconds?
Answer:
171.5Watts
Explanation:
Given parameters:
Mass = 5kg
Distance = 28m
Time = 8s
Unknown:
Power = ?
Solution:
Power is the rate at which work is done;
Power = [tex]\frac{work done }{time taken}[/tex]
Work done = force x distance = mg x d =
m is the mass
g is the acceleration due to gravity
d is the distance
Work done = 5 x 9.8 x 28 = 1372J
Power = [tex]\frac{1372}{8}[/tex] = 171.5Watts
Plz answer and I will give Brainlyest
Answer:
true
Explanation:
Answer:
True.
Explanation:
Forces start and change the motion of an object. Question 1 options: True False
What happens when the force of friction is more than the force of a moving object?
The object will slow down.
The object will be unaffected.
The object will continue at the same speed.
The object will speed up.
Inertia is a force which brings all objects to a rest position. Fast-moving objects have more inertia than slow-moving objects. False - The speed of an object has no impact upon the amount of inertia that it has. Mostly True - Two objects of the same mass can weigh differently if they are located in different locations.
I don't know if this will help