In which situation is maximum work considered to be done by a force?
A. The angle between the force and displacement is 180°.
B. The angle between the force and displacement is 90°.
C. The angle between the force and displacement is 60°.
D. The angle between the force and displacement is 45°.
E. The angle between the force and displacement is 0°.
Answer:
d
Explanation:
I really don't know how to explain
An object spun around in a circular motion such That’s is frequency is 24Hz . What is the period of its rotation?
Answer:
It would spin ifintely
Explanation:
When does a metal atom stop reacting
Answer:
When a metal element reacts with a non-metal element an ionic compound is formed. An understanding of the way the elements are bonded allows us to explain their typical properties.
Reactions between metals and non-metals include:
sodium + chlorine → sodium chloride
magnesium + oxygen → magnesium oxide
calcium + chlorine → calcium chloride
Explanation:
In all of these reactions, the metal atoms give electrons to the non-metal atoms. The metal atoms become positive ions and the non-metal atoms become negative ions.
A metal atom often stop reacting when it has lost all of its outer electrons.
Metal atoms often have few electrons in their outer shell.
Non-metal atoms does have plenty of electrons in their outer shell.
A Metal atoms lose the electron, or electrons, when in their highest energy level and tend to be positively charged ions.
Non-metal atoms often gain an electron, or electrons, so as to be negatively charged ions.
The loss or gain of valence electrons make ions to work with the octet rule and become more stable.
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The earliest form of soccer occurred in 1697b.c. by the ancient
A. Egyptian
B. Greeks
C. Chinese
D. Japanese
I’ll give brainly
Answer:
C. Chinese
Explanation:
The oldest recorded soccer-like game is the Chinese game of tsu-chu, allegedly invented by the emperor Huang-Ti in 1697 b.c. Records from Huang-Ti's time describe a game played with a leather ball stuffed with animal hair and cork. Two teams vied to kick it through goal posts.
What do we mean when we say that momentumis a vector
Answer:
it has both magnitude and direction.
Explanation:
A car with a mass of 1400 kg moves along the ice with a constant velocity of 18.0 m/s. What is the car’s momentum?
Answer:
M= mv= 1400 x 18= 25200 kg x m/s
The crane pull up the mass with 1150 N. Find the acceleration the
mass.m = 100kg
Kren tersebut menarik naik jisim itu dengan 1150 N. Cari daya
paduan pada jisim itu
[use gravitational acceleration, g = 9.81 m s?]
Answer:
-1.69 m/s²
Explanation:
We are told the crane pulls up the mass with a force of 1150 N.
This means it is in an opposite direction to gravity and thus acceleration(a) is negative.
Now, the gravity is acting downwards, thus, total force is;
F = mg - ma
1150 = 100(9.81 - a)
Divide both sides by 100 to get;
11.5 = 9.81 - a
a = 9.81 - 11.5
a = -1.69 m/s²
I don't understand how to do this?
A train whistle is 580 Hz when
stationary. It is moving away from
you at 18.8 m/s. What frequency
do you hear?
(Speed of sound = 343 m/s)
(Unit = Hz)
HELP PLS!!
Answer:
Did you find the answer for this?
Explanation:
Answer:
550Hz
Explanation:
What is the mass of an apple with a potential energy of 8 Joules that is on a shelf that is 4 meters high?
A; 32kg
B; 15Kg
C;4kg
D:2kg
Conservation of momentum
Answer:
8.6 m/s
Explanation:
From the question,
applying law of conservation of momentum
Total momentum before collision = Total momentum after collsion
mu+m'u' = mv+m'v'....................... Equation 1
make v' the susbject of the equation
v' = (mu+m'u'-mv)/m'.................. Euqation 2
Where m = mass of the ball, m' = mass of the can, u = initial velocity of the ball, u' = initial velocity of the can, v = Final velocity of the ball, v' = final velocity of the can.
Given: m = 1.2 kg, m' = 0.7 kg, u = 14 m/s , u' = 0 m/s (at rest), v = 9 m/s.
Substitute these values into equation 2
v' = [(1.2×14)+(0.7×0)-(1.2×9)]/0.7
v' = (16.8-10.8)/0.7
v' = 6/0.7
v' = 8.6 m/s
Which of the following statements is true of gravity?
A. Gravity decreases rapidly as the distance between two objects increases, especially when considering distances between objects in space
B. Gravity is affected by the weight of two objects that attract each other and the distance between them.
C. Both A and B are correct.
D. Neither A or B is correct.
What type of planets does the asteroid belt orbit?
Answer:
Main Asteroid Belt: The majority of known asteroids orbit within the asteroid belt between Mars and Jupiter, generally with not very elongated orbits. The belt is estimated to contain between 1.1 and 1.9 million asteroids larger than 1 kilometer (0.6 mile) in diameter, and millions of smaller ones.
Explanation:
Hi!Most of these objects, called planetoids or asteroids meaning "star-like" orbit between Mars and Jupiter in a grouping known as the Main Asteroid Belt.
What is the weight of a
63.7 kg person?
Answer:
A person that weighs 63.7 kg weighs 63.7 kg
Explanation:
Too complicated to explain.
Answer: 140.4 pounds
Explanation:
500cm3 of water is to be jeated from room temperature 28oc to 100oc in order to prepare ahot cup pf coffee. What os the minimum heat required
Answer:
The minimum heat required is 171626 joules.
Explanation:
By First Law of Thermodynamics, the amount of heat ([tex]Q[/tex]), in joules, is equal to the change in internal energy of water. The minimum heat required is the sensible heat necessary to heat up the water. That is:
[tex]Q = \rho\cdot V \cdot c\cdot \Delta T[/tex] (1)
Where:
[tex]\rho[/tex] - Density of water, in kilograms per cubic meter.
[tex]V[/tex] - Volume of water, in cubic meters.
[tex]c[/tex] - Specific heat of water, in joules per kilogram-degree Celsius.
[tex]\Delta T[/tex] - Change in temperature, in degrees Celsius.
If we know that [tex]\rho = 1000\,\frac{kg}{m^{3}}[/tex], [tex]V = 5\times 10^{-4}\,m^{3}[/tex], [tex]c = 4186\,\frac{J}{kg\cdot ^{\circ}C}[/tex] and [tex]\Delta T = 82\,^{\circ}C[/tex], then the minimum heat required is:
[tex]Q = 171626\,J[/tex]
The minimum heat required is 171626 joules.
What kind of model is this?
Probably B. but I’m close to failing if I miss this question
Answer:
i think that it is a computer model
Answer:
The answer is B.
Explanation:
Computer Model
What quantity is measured on the x-axis of a position vs. time graph.
distance
time
velocity
position
Answer:
Velocity
Explanation:
Answer the question?
Suppose your friend investigated the color of pea pods and concluded that green pods (G) were dominant over yellow pods (g).
Answer:
Terms in this set (25) Mendel crossed true-breeding plants having yellow peas with plants having green peas. The resulting plant had all yellow peas. An F1 cross resulted in 3/4ths of the plants having yellow peas and 1/4th of the plants having green peas.
Explanation:
Answer all of those questions and you will get the brainiest
Answers:
1) A process that occurs when an object or a particle moves, referred to as kinetic energy
2) A potential energy is a stored amount of energy that changes depending on the relative positions.
3) Potential Energy is the energy stored in an object due to its position. Kinetic Energy is the energy of motion in a moving object.
4)
a) C and B
b) A
c) From B to A or from C to A
d) From A to B or from A to C
[tex]\huge\mathfrak\green{answer}[/tex]
1) Kinetic energy of an object is the measure of the work an object can do by the virtue of its motion.
For Example : A river flowing at a certain speed comprises kinetic energy as water has certain velocity and mass.
2) Potential energy is the energy held by an object because of its position relative to other objects, stresses within itself, its electric charge, or other factors.
For Example : A child at the top of the slide
3) KINETIC ENERGY
Kinetic energy is the kind of energy present in a body due to the property of its motionIt can be easily transferred from one body to anotherIt is relative with respect to natureFlowing water is one of the examples of kinetic energyPOTENTIAL ENERGY
Potential Energy is the type of energy present in a body due to the property of its stateIt is not transferableIt is non-relative with respect to natureWater present at the top of a hill is an example of potential energy(make sure to draw a table and write them separately)
4)
a) C and B
b) A
c) B to A then C to A
d) A to B then A to C
(mark me brainliest please I need 1 more :))
[tex]\large\sf\green{thank \: you}[/tex]
The earth gravity field strength in the south pole is less than the north pole. Explain
Answer:
Your weight is the combination of all the large-scale, long-term forces on your body. While the earth's gravity is by far the strongest large-scale force, it is not the only one. What you experience as "something pulling you down" is actually the total of all the forces and not just gravity. The four dominant large-scale,
Explanation:
When a planet orbits the Sun, the
force of gravity pulls the planet
A. inward.
B. outward.
C. forward.
D. backward.
1. A block of aluminum occupies
a volume of 15.0 mL and
weighs 40.5 g. What is its
density?
Answer:
2700g/L
Explanation:
D=m/v
40.5g/0.015L
what is the difference between circumstances and circumference??
pls ans asap
Answer:
understand
Explanation:
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Arrange these source charges in order from least to greatest magnitude.
A. A, B, C, D
B. B, D, C, A
C. C, A, B, D
D. D, B, A, C
Answer:
option c is the right answer
Answer:
D, B, A, C
Explanation:
The more lines, the greater the charge.
Explain what must be true of component waves for reinforcement or interference to occur.
The answer is the component of waves must have same frequency and phase.
a. l1 =20 A and l2 =24 A
B. l1 = 20A and l2 = 12 A
C. l1 = 26 A and l2 = 12 A
D. l1 = 24 A and l2 = 8 A
Answer:
when u find out pls lmk! i have the same question and I've been stuck for a while lol
ignoring friction, what is the mass of an object accelerating at 1.8m/s2 to which an unbalanced force of 42 Newtons has been applied?
Explanation:
Newton's second law:
F = ma
42 N = m (1.8 m/s²)
m = 23 kg
An object accelerating at 1.8 m/s² to which an unbalanced force of 42 Newtons has been applied, mass of object is 23 kg.
What is force?A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.
Given in the question the mass of an object accelerating at 1.8 m/s² to which an unbalanced force of 42 Newtons has been applied is ,
Using Newton's second law force is given as
F = ma
42 N = m (1.8 m/s²)
m = 23 kg
An object accelerating at 1.8 m/s² to which an unbalanced force of 42 Newtons has been applied, mass of object is 23 kg.
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a way of transferring heat that occurs when the heat source and the heat sink are connected through matter
A. conduction
B. radiation
C. convection
D. combustion
Answer:
The answer is A conduction.
Explanation:
Answer:
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Explanation:
Write down three facts you about motion
Write Them in complete sentences
Answer:
Kindly check explanation
Explanation:
Motion of an object could be explainwd as how a body changes position over time. Some of the proven facts about motion are stated by Sor Isaac Newton, named the Laws of motion :
1. A body will continue on it's state of rest or uniform motion in a straight line unless acted upon by a force to make it act otherwise.
2.) The second law explains that the force acting in an object is a product of the mass and acceleration.
Force = mass * acceleration due to gravity
3.) To every action, there is an equal and opposite reaction.
That is ; applied force in the positive direction on an object, yield an equal amount of force in the opposite direction.