Answer:
Full moon
Explanation:
You push really hard against a round rock, but you cannot make it roll. Which statement best explains why you cannot move the rock
Answer:
b
Explanation:
a Gravity pulls the rock toward the center of Earth.
b The forces between you and the rock are balanced.
c The force of your push is greater than the opposing force.
d There is no friction to help you move the object.
The correct answer would be that the forces between you and the rock are balanced.
In order to get the rock rolling, both the frictional force between the rock and the surface on which it stands as well as the gravitational force acting on its mass must be exceeded. If the applied force balances these forces or falls short, the rock will not move.
The correct option is b.
Plate techtonics refers to the theory that
2. Which of the following changes on different celestial objects due to the
force of gravity?
A. mass
B. weight
C. height
D. width
Answer: The answer is B Hope this helps
Explanation:
An astronomical object is also called a celestial object. It is a naturally occurring physical entity. They are complex, have diverse structures and weights. They even have substructures.
The shape and size of the celestial objects within galaxies their mass, size weight, and galactic matter all make them different and hence exert a force of its gravity.Hence the option B is correct.
Learn more about the changes on different celestial objects.
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Based on the displacement graph below, which divider is likely to experience the greatest negative acceleration?
A. The divider originally located at 1 unit.
B. The divider originally located at 4 units.
C. The divider originally located at 7 units.
D. The divider originally located at 10 units.
Answer:
The answer I'ts going to be A
Explanation:
because i just did it lol
PLEASE HELP! WILL GIVE BRAINLY Which of the four fundamental forces acts over very long distances but does
not cause planets in the solar system to pull on each other?
A. Gravitational
B. Weak nuclear
C. Strong nuclear
D. Electromagnetic
SUBMIT
Answer:
Electromagnetic
Explanation:
Just got it correct
The electromagnetic force of the four fundamental forces acts over very long distances but does not cause planets in the solar system to pull on each other. The correct option is D.
What is electromagnetic force?It is a type of force that occur between electrically charged particles. The electromagnetic force is the combination of all the electrical and magnetic forces generated from any charged particle.
The electromagnetic force is a long-range force that can either be attractive or repulsive.
As we know electromagnetic force is a long-range force but does
not cause planets in the solar system to pull on each other, therefore the correct answer is D.
Learn more about electromagnetic forces
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10. An object of a mass 300 KG is observed to accelerate at the rate of 4M/S2. Calculate the force required to produce this acceleration.
Answer:
1200 Newton
Explanation:
Force is equal to mass times acceleration
please mark me brainliest
Hello, can anyone help me with this question?
help me please thank you
Answer:
B
Explanation:
mechanical wave that is the answer
Hope this helps plz hit the crown :D
Answer:
B
Explanation:
The answer is the mechanical wave.
What is the average speed of a runner who completes a 400 m lap in 80 s?
400 divided by 80 will give you the answer!
A comparison of a machine’s work output with its work input is called __??__.
During the rock cycle, cooling magma and lava from igneous rock, heat and pressure cause other rocks to turn into metamorphic rock, and weathered rock on the surface is eventually turned into sedimentary rock. Rocks move through this cycle at different rates, but it can take some rocks several billion years to complete the cycle. Using this information, what is the most likely reason why scientists use models to study the rock cycle?
A. The rock cycle only affects objects that are too small to be observed directly.
B. The rock cycle is only an abstract idea and does not actually occur in nature.
C. The rock cycle no longer occurs on Earth.
D. The rock cycle takes too long to be able to observe it in entirety.
Answer:
D. The rock cycle takes too long to be able to observe it in entirety.
Explanation: is answer
A 5.0 Newton force is applied to the right of a 6.0 kg object to move across a smooth surface. The coefficient of friction is zero. a. Draw and label all of the forces acting on the object b. Calculate the acceleration of the object
Answer:
[tex]0.833\ \text{m/s}^2[/tex]
Explanation:
m = Mass of block = 6 kg
F = Force on block = 5 N
[tex]\mu[/tex] = Coefficient of friction = 0
a = Acceleration of the block
From Newton's second law we have
[tex]F=ma\\\Rightarrow a=\dfrac{F}{m}\\\Rightarrow a=\dfrac{5}{6}\\\Rightarrow a=0.833\ \text{m/s}^2[/tex]
The acceleration of the block is [tex]0.833\ \text{m/s}^2[/tex]
Se coloca una tuerca con una llave, como muestra la figura, si el brazo r= 30 cm y el torque de apriete recomendado para la fuerza es de 30 Nxm, Cuàl debe ser el valor de la fuerza F aplicada?
Answer:
F = 100 N
Explanation:
The torque is given by the expression
τ = F x r
where bold letters indicate vectors, the magnitude of this expression is
τ = F r sin θ
In general, when tightening a nut, the force is applied perpendicular to the arm, therefore θ = 90 and sin 90 = 1
τ = F r
F = τ / r
calculate
F = 30 / 0.30
F = 100 N
Describe how could you use an electromagnete to sort a mixture of iron and copper pieces into two seprate piles of iron and copper
Answer:
Electromagnetic cranes are used to separate copper from iron in a scrap yard. The current is switched on to energies the electromagnet and pick up the iron pieces from the scrap. Then these iron pieces are moved to another position, the electromagnet in switched off and the iron pieces are released.
Explanation:
Car's mass is 950kg. It's driven at 100km/h. How big is the kinetic energy?
Answer:
4750000 J
Explanation:
Kinetic Energy= 1/2* mass* velocity²
1/2*950*100²=4750000
Explain how water waves are not purely transverse waves
Answer:
Water waves are an example of waves that involve a combination of both longitudinal and transverse motions. As a wave travels through the waver, the particles travel in clockwise circles. The radius of the circles decreases as the depth into the water increases.
Explanation:
The quantity of matter in an object. More specifically, it is the measure of the inertia that an object exhibits in response to any effort made to start it, stop it, or change in any way its state of motion
Answer:
Mass
Explanation:
The mass of an object expresses the amount of matter it comprises. Which implies that objects with higher mass contains higher matter compared to objects with lesser masses. Thereby it determines the measure of inertia experienced by an object when a force is applied to change its direction of motion, or to set it in motion when at rest, or bring it to rest when in motion.
The mass of an object the same no matter its location, and it is measured in kilograms.
while riding in a car, you notice some fuzzy dice hanging from the review mirror. the car is traveling at a constant speed. according to newton's first law, what will happen when the car stops suddenly.
A. the dice move to the right
B. the dice move forward
C. the dice move backwards
D. the dice move to the left
Answer:
I need points thank you
A 15 cm wrench is used to screw in a bolt. If 30 n of force is applied to it at a 45 degree angle, how much torque is applied? (Round to the nearest tenth)
Answer:
3.18 Nm
Explanation:
Given that:
Radius (r) = 15cm = 15/100 = 0.15m
θ = 45°
Applied force (F) = 30 N
The Torque can be obtained using the relation :
T = rF * sinθ
T = 0.15 * 30 * sin(45)
T = 0.15 * 30 * 0.7071067
T = 3.18198015
T = 3.18 Nm
plzz help
which causes an object in motion to remain in a motion?
a.gravity
b.velocity
c.friction
d. inertia
Answer:
Friction is ur ans
Explanation:
Friction is the external force that acts on objects and causes them to slow down when no other external force acts upon them. Inertia is the tendency of a body in motion to remain in motion.
Inertia causes an object in motion to remain in motion as per the law of inertia.
What is motion?Motion is defined as a phenomenon which is described with respect to change in object's position with respect to time.It is given in terms of displacement,velocity,distance ,acceleration,speed.
Branch of physics which deals with motion of objects without any reference to it's cause is called kinematics while the branch which studies forces and their effects on motion is called as dynamics.
Motion applies to various systems like objects,bodies, matter particles ,radiation ,curvature.There are three laws of motion which are proposed by Newton.Classical mechanics is based on Newton's law of motion.Relativistic mechanics is based on modern kinematics.
Learn more about motion,here:
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What is the current produced by a potential difference of 210 volts through a resistance of 3 ohms?
Answer:
70 amperes
Explanation:
Ohm's Law: V = IR
I = V/R = 210/3 = 70 A
Current produced by a potential difference of 210 volts through a resistance of 3 ohms is 40 A.
What is Ohms law ?Ohm's law states that the potential difference across a conductor is directly proportional to the current flowing through it.
i.e. V [tex]\alpha[/tex] I
V = RI where R is a constant of proportionality called as resistance of a conductor. it opposes flow of current.
ohm's law gives the voltage drop across a resistor.
large resistor gives large voltage drop across it.
Given,
V = 120 Volt
R = 3 ohms
I = ?
V = IR
120 = 3 I
I = 40 A
Hence current produced is 40 A.
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Which forces are acting on the student and the skateboard in the instant in which they are pushing off the wall? (Select all that apply)
A. The force of the student pushing the wall
B.The force of gravity on the skateboard and the student
C.The force of the wall pushing on the student
D. The force of the floor pushing on the skateboard and the student
or E. Select all of the above
Mass (kg)
2
4
6
8
12
15
Weight
(N)
20
35
55
70
105
135
What is the independent variable in this experiment
Mass.
Because mass doesn't depend on weight but weight depends on mass.
A heat engine is a device that converts heat into work.
OA. True
OB. False
Answer:
A, True.
Explanation:
A heat engine converts heat into mechanical energy.
Answer:
True
Explanation:
I've just answered this on a quiz
the distance between two electric pole is 800m then express this in terms of mm
Answer:
Mm stands for milimetres
Explanation:
Answer:
800,000mm
Explanation:
1m = 1000mm
800 × 1000 = 800,000mm
Can an object with constant also be accelerating?
Answer:The velocity vector is constant in magnitude but changing in direction. Because the speed is constant for such a motion, many students have the misconception that there is no acceleration. ... For this reason, it can be safely concluded that an object moving in a circle at constant speed is indeed accelerating.
Explanation:
a 3.2 kg durian fruit is pushed across the table.If the acceleration of the durian is 3.1 m/s/s to the right,what is the net force exerted on the fruit?(Fnet=ma)
Answer:
9.92 NExplanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × acceleration
From the question we have
force = 3.2 × 3.1
We have the final answer as
9.92 NHope this helps you
Answer:
9.92
Hope I helped
the time rate of change of momentum is equal to
Answer:
the time rate of change of momentum is equal
Answer:
the time rate of change of momentum is equal to the force acting on the particle.
Explanation:
hope this is helpful :)
Which system is used for transporting molecules to the cells?
Answer:
Water, carbon dioxide, and oxygen are among the few simple molecules that can cross the cell membrane by diffusion
Explanation:
Explain how the perfume atomizer works under Bernoulli's principle
Answer:
In an atomizer, or perfume sprayer, you squeeze a rubber bulb to squirt air through a tube. Because of the Bernoulli principle, the air rushing through the tube has a lower pressure than the surrounding atmosphere. ... The perfume is pushed out of the tube and sprays into the air as a fine mist.
Explanation: