Answers
Explanation:
Let & mean "is proportional to"
F & [m(V - Vo)]/∆t
We can see that increase in the applied force equals increase in the change in momentum (increase in change of velocity).
Also,
An increase in the mass of the object requires more force to be applied for work to be done.
Related Questions
Which notation is commonly used on force diagrams to show forces acting on an object?
FD
Fz
FN
Fx
Answers
Answer:
FD (Force Diagram)
Explanation:
when a positive charge is released and moves along an electric field line: it moves to a position of lower electric potential and lower kinetic energy
true or false
Answers
Hi there!
False.
Imagine if we released a positive charge between two parallel charged plates (one negative, and the other positive).
Since like charge repels, the positive charge would be repelled by the positive plate and would move towards negative plate, as opposite charge attracts.
The Electric potential of the POSITIVE charge increases as you move closer to the positive plate, with the potential decreasing as you move closer to the negative plate. Since the positive charge will accelerate towards the negative plate, it is LOSING electric potential energy.
As it loses electric potential energy, due to the conservation of energy, it must GAIN kinetic energy. There is work being done on the positive charge due to the potential difference between the plates, which increases its kinetic energy.
Therefore, the given statement is false.
The skateboarder starts at the top of the ramps, and rolls down and back up the other side. Which graph shows the most Kinetic Energy?
Answers
Answer:
C
Explanation:
Usually when you are at the bottom you are at peak speed. It also shows that Kinetic Energy is the green bar and in picture C the green bar is highest.
Does the moon have water?
Answers
Explanation:
after rereading: Yes, there is a term for water on the moon and it's called lunar water, pretty straightforward. you can check out moon.nasa.gov, or literally look this up in the magical (g-engine) and it'll gove you a few articles.
______________________
oh my, sorry, i thought the question asked if the moon moved water, in which case: I wouldn't say that the moon actually MOVES the water, but yes, its gravitational force is strong enough to affect tides on Earth. (i could've sworn that's what I saw but whatever, sorry!)
This is when water vapor is decomposed by sunlight. Leaving hydrogen and oxygen
A stone is thrown vertically upwards from the ground with a velocity of 49m/s. after 2 seconds, another stone is thrown vertically upwards from the same place on the ground. If the two stones strike the ground at the same time, find the velocity with which the second stone was thrown upwards.
Answers
Answer:
39.2 m/s
Explanation:
Find the time for the first one to hit the ground
h = vo t - 4.9 t^2 with h = o
0 = 49 t - 4.9 t^2 t = 10
second stone hits ground in 10 - 2 - 8 seconds
0 = vo (8) - 4.9(8)^2
vo = 39.2 m/s
When a stone is thrown vertically upwards at a velocity of 49m/s, and after 2s another stone is thrown vertically upwards, If the two stones strike the ground at the same time the velocity with which the second stone will be 39.2 m/s.
velocity is rate of change of displacement with respect to time. it is measured in m/s.
When a stone is thrown vertically upwards acceleration due to gravity acts opposite to the velocity. At the maximum height, final velocity becomes equal to zero. hence according to kinematic equation.
v₂² = v₁² - 2as = 0
v₁² = 2as
49² = 2×9.8×s
s = 49² ÷ 2×9.8
s = 122.5 m
This is maximum height attained by the a stone.
Time required for the first stone to attain max height,
s = ut -1/2at²
122.5 = 49t - 1/2*9.8t²
9.8t²-98t+245= 0 this is quadratic equation in t, solving it we get,
t= 5s
Total time of the flight of the first stone is 10s
According to the problem, Both the stones falls at same time, hence Total time of flight of second stone will be 10-2 = 8s
According to to projectile motion time of the flight is given by,
t = 2vsinθ ÷ g
here θ = 90°
t = 2v/g
8 = 2v/9.8
v = 8×9.8/2
v = 39.2 m/s
The velocity of the second stone with which it was thrown is 39.2 m/s.
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Ralph is studying chemical potential energy. Which of the following activities would help Ralph in his studies?
A. Determining the energy in the bonds of a water molecule
B. Measuring the change in length of a stretched rubber band
C. Observing objects of different masses being dropped from a height
D. Calculating the rate at which a car increases speed moving downhill
Answers
Answer:
A
Explanation:
D measusers the speed
C measures GPE
B tests Hookes Law
A is rhe only one that isnt related to physics and has chemistry involved
A 10 N force and a 30 N force act on an object in the SAME DIRECTION . What is the net force on the object?
Answers
Answer:
40N
Explanation:
the forces act in the same direction so we add the forces
If you ride a bicycle 36 m in 12 seconds, what is your speed?
O A. 0.3 m/s
O B. 3 m/s s
O C. 0.09 m/s
/
D. 2 m/s
Answers
Answer:
3m/s
Explanation:
Speed is distance/time,
36m/12s = 3m/s
As the wavelength of electromagnetic radiation increase
Answers
Answer:
the frequency and the radiation of radiation decreases.
Explanation:
After a neutral object loses 2 electrons, it will have a
net charge of
A) -2 elementary charges
B) +2 elementary charges
C) -3.2 x 10-19 elementary charge
D) +3.2 x 10-19 elementary charge
Answers
Answer:
the measured charge will be -2 elementary charges.
Explanation:
The glass is attracting the pieces of paper. What does
this tell you about the charges on the glass and the
paper?
Answers
Answer:
If the charges of both the paper and glass attract we can deduce that both charges with opposite signs. If they were repelling each other then their charges would have the same sign.
so in this case:
ONE HAS A POSITIVE CHARGE WHILE THE OTHER HAS A NEGATIVE CHARGE
In one or two sentences make and justify a claim about two aspects of the picture that illustrate behaviors of light.
Answers
We can make the claim that light can be reflected, which is justified by the reflection seen on the water as well as the colors seen in the photo.
How can we tell that light is being reflected?We can claim that light can and is being reflected in this image due to the reflection in the water as well as the colors. As the light traveling in the air collides with the water, it abruptly changes speed, causing a portion of these waves to be reflected back, thus creating a mirror image on the surface of the water. This is also the case with colors, which are caused by a material reflecting all but one wavelength of light.
Therefore, we can confirm that it is possible to make the claim that light can be reflected, which is justified by the reflection seen on the water as well as the colors seen in the photo.
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14*3(36/2(1*3)/6
[tex]14 \times 3(36 \div 2(1 \times 3) \div 6[/tex]
Answers
1 × 3 = 3
step 3. find 36 divided by 236 ÷ 2 = 18
step 4. add the values together18 + 3 = 21
step 5. find 14 times 314 × 3 = 42 you can also do 7 × 6 and will get the same result because 7 is half of 14 and 3 is half of 6
step 6. add what is outside the parentheses21 + 42 = 63
step 7. divide by 663 ÷ 6 = 10.5 [tex]-- >[/tex] 10 remainder of 3 remainder means left over
Kinetic energy and mass are ____ proportional.
Answers
Answer:
directly
Explanation:
Answer: Directly
Explanation:
Describe the unique characteristics of fluids.
Answers
Answer:
Surface tension, capillary action, and viscosity are unique properties of liquids that depend on the nature of intermolecular interactions. Surface tension is the energy required to increase the surface area of a liquid by a given amount. The stronger the intermolecular interactions, the greater the surface tension
force and ___ work together cause objects to move or to stay in place
Answers
Answer:
frictional force
Is putting ice cubes into soup convection, conduction or radiation
Answers
The force acting on a body of mass 200 g is equal to 0. Determine the velocity of the body 3 seconds after the start of the observation, if at the initial moment of the observation its velocity is 5 m / s?
Answers
Answer:
You do a study of hypnotherapy to determine how effective it is in increasing the number of hourse of sleep subjects get each night. You measure hours of sleep for 12 subjects with the following results. Construct a 95% confidence interval for the mean number of hours slept for the population (assumed normal) from which you took the data.
Stefan pushes a cart with three books so it just reaches the end of a track. He puts six books onto the cart. What must he use next time so the cart reaches the end of the track?
Answers
Answer:
if its adding its 9 if its multiplying its 18 if its division its 2
Need Help Immediately. Brainly will be given to the best response!
Answers
Answer: Its (B)
Explanation
Answer:
Option B
Explanation:
See angular velocity is decreasing with respect to time , angular acceleration is negative .
The slope of the graph should be angular acceleration as slope is change in y with respect to x .
Here initial velocity made twice
so y intercept or vertical intercept should go twice up wards.
The horizontal intercept will also go twice rightwards because slope or angular acceleration is constant given .
If scale is one box=1units
new vertical intercept=2(3)=6New horizontal intercept=2(3)=6Draw a line to connect them .Remember that displacement will be doubled also
What is convectional current?.... .
Answers
Answer:
Convection is the transfer of heat from one place to another along with the motion of the object's particles. Water is a poor conductor. However, when the bottom water is heated, it turns out that the top water is also hot. This means that there is another way of transferring heat to the water, namely convection.
Explanation:
A convectional current is a process that involves the movement of energy from one place to another.
If the error in the angle is 0.50, the error in sin 90° is
Answers
The error in the measurement of sin 90 degrees at the given error in angle is 0.001.
Error in measurementThe error in measurement is obtained from the difference between the actual measurement and the observed measurement.
The error of sin 90 degrees is calculated as follows;
Actual measurement = sin 90 = 1
Observed measurement = sin(90 - 0.5)
Observed measurement = sin(89.5) = 0.999
Error in measurement of sin 90 degreesError in measurement = Actual measurement - Observed measurement Error in measurement = 1 - 0.999
Error in measurement = 0.001
Thus, the error in the measurement of sin 90 degrees at the given error in angle is 0.001.
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Can I please get help to add onto this? Is there anything else i can add? Should i delete anything? Please let me know
Explain why applied force is plotted on the vertical axis of the graph even though it is the independent variable in this investigation.
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Force is an independent variable. Hooke's law states that the force required to stretch or compress a spring by a certain distance is proportional to that distance, which applies in the spring. When changing the force, you apply the displacement change. The greater the displacement, the more the spring contracts. The slope of the line tangent to the graph gives the spring constant. is what gets the spring's potential energy. multiplying by F * x to gets the work done
Answers
What is one way that plants can harm the environment?
Answers
Answer:
Invasive plants also degrade the environment by changing the species composition and the ecology of invaded ecosystems
Explanation:
Answer:
they can harm the enviroment by changing the species composition and the ecology of invaded ecosystems !!
Explain the use of each part of screw gauge.
Answers
Answer:
Ratchet- To rotate the screw by turning it so that the object is gently held between the shud and spindle of the screw.
Sleeve- To mark main scale and base line.
Thimble- To mark circular scale.
Main scale- To read length correct up to 1mm.
Circular scale- Helps to read length correct up to 0.01mm.
Astronomers classify galaxies into three basic types: spiral, elliptical, and irregular. If the Sun and Earth were located on the edge of an elliptical galaxy, what would you expect to see when you look up in the sky at night
Answers
Most of the night sky would be dark with only a few stars if the solar system were moved on the edge of galaxy.
What we can see at night if sun and earth moved to the edge?If the Sun and Earth were moved on the edge of an elliptical galaxy, we can see most of dark and few stars in the sky at night because stars are present at large number at the center of galaxy and fewer at th edges.
So we can conclude that most of the night sky would be dark with only a few stars if the solar system were moved on the edge of galaxy.
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Fill in the blanks:
Words: Increases, decreases, Dimmer, is the same
1) When we add another lamp into a series circuit, the total resistance _____, this means that the total current _____. Also, the potential difference across each of the lamps ______. This means that the lamps all become_____.
2)When we add another lamp into a parallel circuit in a new branch, the total resistance ________, the current through each lamp ______. Also, the potential difference across each of the lamps ______. This means that the lamps have the same brightness.
Answers
Answer:
See Below
Explanation:
1) When we add another lamp into a series circuit, the total resistance increases, this means that the total current is the same. Also, the potential difference across each of the lamps decreases. This means that the lamps all become dimmer.
2)When we add another lamp into a parallel circuit in a new branch, the total resistance decreases, the current through each lamp decreases. Also, the potential difference across each of the lamps is the same. This means that the lamps have the same brightness.
What is wave motion ?
Answers
Explanation:
Literally wave motion is a motion which is like wave .It denotes to transfer of energy and momentum.It is denoted to transfer of matter between two mediums virtually not actually.What is meant my magnetism ?
Answers
Magnetism is the property of a material produced, by the motion of electric charge resulting in attraction and repulsion between objects.
A kid on a skateboard is halfway down a hill. If he has 500J of kinetic energy, what is the total energy in the system, his potential energy and his kinetic energy?
Give: Total energy [1] KE [2] PE [3]
Answers
as the skateboard moves halfway down the hill, kinetic energy will increase, and potential will decrease, but the total will stay 500 J
potential energy will go from 500 to (500÷ 2) = 250 J
kinetic will go from 0 to 250J halfway
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