Answer:
Probably like around 30 - 35 years, 100-250 days and 7-14 hours
Explanation:
Plate techtonics refers to the theory that
how much heat must be absorbed by 375g of water to raise its temperature at 25°C?
Answer:
kJ = 1000J
Explanation:
The formula q = 375 g × 25 C × 4.186 J / (g×C) = 39,243.75 J represents the heat in Joules, m the mass in grams, difference of temperature in Celsius degree, and 4.186 J/(g×C) is the specific heat of water. I assumed the water is liquid from and will remain liquid). Approximately 39.24 kJ once you round and transform to kJ = 1000J.
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
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 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
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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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.
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A comparison of a machine’s work output with its work input is called __??__.
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
EXPLAIN how a thermostat uses electric energy, mechanical energy , and thermal energy
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!
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.
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:
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 :)
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.
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
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
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
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:
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.
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Mass and weight are the same in
meaning and unit.
true or false
Answer:
False.
Explanation:
Mass is how much space an object takes up, while weight is how light or heavy an object is.
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.
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]
Hello, can anyone help me with this question?
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
A rock thrown to the right with an initial horizontal velocity of 4 m/s lands after 5
seconds. What horizontal distance has the rock traveled?
Answer:
20m
Explanation:
Using the equation s=d/t and re arranging it to solve for distance, d=St, where d=distance, s=speed, ant t=time, we can plug in known variables.
d=4*5
d=20m
there is a distance of 20m traveled
The horizontal distance traveled by the rock is 20 m
For horizontal motion, we use the formula below
⇒ Formula
s = vt.................... equation 1
⇒ Where
S = horizontal distance traveled by the rockv = velocity of the rockt = timeFrom the question,
⇒ Given:
v = 4 m/st = 5 seconds⇒ Substitute these values into equation 1
s = 4×5s = 20 mHence, The horizontal distance traveled by the rock is 20 m
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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
Increasing your workload a little bit is called?
A progression
B regularity
C overload
D specificity
Answer: A
Explanation:
