The magnitude of the adhesive force allows the top block to remain
attached to the bottom when the blocks and the wire are balanced.
The option that must be true is; [tex]\mathbf{W_{bottom} = F_{adhesion}}[/tex]
Reason:
The tension exerted by the wire attached to the top block = T
Magnitude of the adhesive = [tex]F_{adhesion}[/tex]
Weight of the top block = [tex]W_{top}[/tex]
Weight of the bottom block = [tex]W_{bottom}[/tex]
Given that with the exertion of the tension, the two blocks remain at rest, we have;
T = [tex]W_{top}[/tex] + [tex]W_{bottom}[/tex]The adhesive causes the bottom block to remain attached to the top block, we have;
Therefore, the magnitude of the adhesive force adds the bottom weight, to the top, weight, which gives;
The magnitude of the adhesive force = The weight of the bottom block
Therefore;
[tex]W_{bottom}[/tex] = [tex]F_{adhesion}[/tex]Learn more here:
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Answer:
Wbottom=Fadhersion it was right on y test
Explanation:
If the activity of a source is 70 Bq after 2 years, and 35 Bq after 15 years. How long will be until the activity is 8.75 Bq?
Answer:
N = N0 e^-kt calling k the decay constant
70 = N0 e^-2 kt
35 = N0 e^-15 k
2 = e^(-2 + 15) k
.693 = 13 k
k = .0533
N0 = N e^kt
N0 = 70 e^(.0533 * 2) = 77.87
8.75 = 77.87 e^-(.0533 t)
ln .1124 = -.0533 t
t = -ln .1124 / .0533 = 41 yr
Why can’t you hit a feather in mid air with a force of 200 N
(This is all the info I was given)
The gravitational field on Saturn is 10.4 times its value on Earth.
a. What would a 100.0-kg mass weigh on Saturn?
b. If the gravitational field on the surface of Pluto is 0.08 times that of Mercury, what would a 7.0-kg mass weigh on Pluto?
Show all work!!
The weight of 100 kg mass on Saturn is 10,192 N.
The weight of 7.0 kg mass on Pluto is 2.01 N.
The given parameters;
acceleration due to gravity, = 10.4gmass of the Saturn, m = 100 kgacceleration due to gravity on mercury, = 3.59 m/s²The weight of 100 kg mass on Saturn is calculated as follows;
W = mg
W = 100 x 10.4 x 9.8
W = 10,192 N
The weight of 7.0 kg mass on Pluto is calculated as follows;
W = 7 x 0.08 x 3.59
W = 2.01 N
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Calculating Height
A ski lift is used to transport people from the base of a hill to the top. If the lift leaves the
base at a velocity of 15.5 m/s and arrives at the top with a final velocity of 0 m/s, what is the height of the hill? Round the answer to the nearest tenth.
[tex]\boxed{\sf v^2-u^2=2gh}[/tex]
[tex]\\ \sf\longmapsto h=\dfrac{v^2-u^2}{2g}[/tex]
[tex]\\ \sf\longmapsto h=\dfrac{0^2-15.5^2}{2(10)}[/tex]
[tex]\\ \sf\longmapsto h=\dfrac{240.25}{20}[/tex]
[tex]\\ \sf\longmapsto h=12.012m[/tex]
what is the mass on mercury of an object that weighs 784 n on the earth’s surface?
Answer:
80 kg weighs 80 kg x 9.8 m/s2 = 784 kg m/s2, or 784 Newtons. The surface gravity of Mercury is 0.39 that of Earth's (table 10-1), so 80 kg weighs 784 N x 0.39 = 306 N.
Explanation:
I hope that helps you
It took 50 joules to push a crate 2.5 meters. With what force was the crate pushed?
It took 50 joules to push a crate 2.5 meters. With what force was the crate pushed?
How is temperature related to the physical change of a substance
Answer:
Temperature is a measure of the kinetic energy of particles in a substance. As temperature increases, the atoms or molecules in a substance gain energy. As temperature decreases, the particles lose energy. A change in the energy of particles causes a change in their arrangement. A change in the arrangement of particles can lead to a physical change.
Explanation:
Brainliest pls
In the absence of friction, explain why the horizontal component of a projectile’s velocity is a constant.
Answer:
This downward force and acceleration results in a downward displacement from the position that the object would be if there were no gravity. The force of gravity does not affect the horizontal component of motion; a projectile maintains a constant horizontal velocity since there are no horizontal forces acting upon it
which type of energy is stored in chemical compounds and released in chemical reactions?
Answer:
potential
Explanation:
what can be done not to let anyone of the country be hungry and clothless discuss in groups and present your findings in the class
...get food to people in need when they need it...
In a salt solution, salt is a solute. why
Answer: Because it can dissolve in water
Explanation: Logic
Which statement is true about vectors?
Vectors need direction and magnitude to exist, otherwise, it becomes scalars that do not require direction to be expressed.
eg - Velocity is a vector as it needs direction, but speed is scalar and does not need direction
hope this helps
Answer:
a. All quantities in physics are not vectors. b. A vector may have either magnitude or direction. c. The vector's length should be proportional to its magnitude. d. Two vectors can be added only if they have the same direction.
I NEED THIS ANSWERED ASAP NO LINKS !!!
I need a answer that is 100% ACCURATE
Answer:
1. Not a noun phrase
2. Noun phrase
3. Noun prase
4. Not a noun phrase
Explanation:
Explain this phase diagram by relating what you know about temperature, states of matter and
pressure.
Answer:
See explanation
Explanation:
The vertical axis corresponds to the pressure of a substance, while the horizontal axis corresponds to the temperature. The solid is the substance which contains particles of strong intermolecular force and compaction, typically ionic at a certain temperature, the liquid is the substance which contains relatively compact molecules, however lacks a particular arrangement. The gaseous substance is caused by particles with weak intermolecular forces, causing particle movement and collision with no arrangement whatsoever. The triple point as shown in the diagram, is the phrase on a diagram where each substance: solid, liquid and gas coexist. The critical point is the phase at which the/a substance is indistinguishable between liquid and gaseous states. A substance or elements state is highly dependent on its environment and it’s temperature, of which ultimately affects its kinetic energy within its particles. This is what the graph portrays and represents.
Hopefully I have aided you, and I apologize for the relatively late response.
A car of mass 850 kg rests on a slope at 25 to the horizontal. Calculate the magnitude of the component of the cars weight which acts parallel to the slope
Answer:
plz show the question ❓ by photo
A) half as much
B) as much
C) two times as much
D) three times as much
Answer:
3 times as much
Explanation:
half as much would be 12%, as much would be 24%, and two times as much would be 48%.
3 times as much is 72, which is about 74%
Evan drives a golf ball with an initial velocity of 49 meters per second at an angle of 16 degrees own a flat driving range. How far will the golf ball land?
Answer:
solusion Explanation:the answer in 984tha
physics
is my choice correct?
correct me pls if not
Answer:
correct
Explanation:
if wrong sorry btw have a great day
a bus starts to move from rest. if its velocity becomes 90 km per hour after 8s second. calculate acceleraton
answer is 3.13ms-2
90 km per hour = 25 metres per second
[tex]a=\frac{v-u}{t}[/tex]
[tex]a=\frac{25-0}{8}[/tex]
[tex]a=3,13m/s^2[/tex]
car starts from rest and reaches a velocity of 10 m/s in 10s a) Draw the v against t graph for the motion of the car? b) From the graph find: i) the slope of the graph. II) Area of the v against t graph bounded by the slope, on x-axis. c) What are the slope and area of v against t graph equal to respectively?
Explanation:
여기 당신의 대답이 있습니다. 즐겨 . 팔로우하고 브레인리스트로 표시해주세요
Answer:
The above answer is correct too, keep busy
hello, may you please help me
Calculate the percentage of water of crystallisation in Na2CO3•10H2O
Answer:
62.9%. The molar mass of sodium carbonate is 106 grams per mole. Each water molecule adds another 18.0 grams per mole.
would you say the rate if cell growth is increasing or decreasing explain.
Dùng công thức gia tốc trọng trường g =GM/R^2 . Tìm gia tốc trọng trường gH trên sao Hỏabiết khối lượng sao Hỏa bằng 0,5325 bán kính Trái Đất, theo đơn vị m/s^2 . Biết gia tốc trọng trường Trái Đất gTĐ =9,8 m/s^2 .
A. 1,204
B. 0,305
C. 3,712
D. 6,218
the energy of a photon is inversely proportional to its:
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
Zeb was lifting a box onto a moving truck. He lifted with a net force of 2000N and the box had a mass of 100 kg. What was the resulting acceleration?
Answer:
20 m/s²Explanation:
The acceleration of an object given it's mass and the force acting on it can be found by using the formula
[tex]a = \frac{f}{m} \\ [/tex]
f is the force
m is the mass
From the question we have
[tex]a = \frac{2000}{100} = 20 \\ [/tex]
We have the final answer as
20 m/s²Hope this helps you
NEED ANSWER FAST
A person pushes a 11.5KG lawn mower with an applied force of 70.0N along the 45.0-degree-handle. if the lawn mower moves at a constant velocity
Determine the net force on the mower:
Fnet=__N
Determine the horizontal component of applied force on the mower:
Fx=__N (round to 3 digits)
Determine the horizontal frictional force acting on the mower
Ff=__N (Round to 3 digits)
Calculate the applied force the person must exert on the mower for it to accelerate at a rate of 1.00m/s^2
F=__N (round to 3 digits)
Force is a vector quantity hence it can be resolved into a vertical and a horizontal components.
1) The horizontal component of the applied force is given by;
Fnet = F cos θ
Fnet = 70.0N × cos (45.0)
Fnet = 49.5 N
2) The horizontal component of the frictional force is;
F = -Ff + mgsinθ
F = applied force
Ff =mgsinθ - F
Ff = (11 × 10 × sin 45) - 49.5
Ff = 28.3 N
Horizontal component of Ff
28.3 N cos 45 = 19.9 N
3) The applied force is given by;
F = 11 Kg × 1.00m/s^2 = 11.0 N
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A car accelerated from rest in 3.07s. During this time, the car went 46m forward. What was its acceleration?
_______m/s/s
1.) 450 cm =____m
2.) 24 miles =____cm
3.) 16.7 gallons =____liters
Answer:
450cm = 4.5m
24miles = 3862430 cm (3.9×10⁶cm)
16.7 gallons = 63.216 liters (approx.)
Explanation:
brainliest plz
A plant uses carbon dioxide and water to form food and oxygen. Why is this a chemical change?
Answer:
because when the plant inhales c02 it exhales oxgen
Explanation:
Answer:
The properties of carbon dioxide and oxygen are different.
Explanation:
A chemical change is defined as something that changes the substance of something (such as the creation of water from hydrogen and water), and can be figured out if chemical or physical based on different changes and properties. Your answer will be The properties of carbon dioxide and oxygen are different because these are two different elements (compounds in case of CO2) that combine to form a different substance, thus changing the identity of the substance.
Photosynthesis is a chemical reaction that occurs in plants by using radiant energy from sunlight. In this chemical reaction, carbon dioxide from the atmosphere and water from the soil are combined to produce sugar (glucose) that contains stored chemical energy.
A subatomic particle that has a positive charge and that is located in the nucleus of an atom
Proton
Neutron
Electron
Nucleus
Answer:
c
Explanation:
Answer:
protons have a positive charge
Explanation:
neutrons have no charge
electrons have negative charge