Answer:
621.83grams
Explanation:
Using the formula;
Mole = mass ÷ molar mass
Where;
Mole = mol
Mass = grams
Molar mass = g/mol
According to the information given in this question, number of moles = 3.1mol, mass of Hg = ?, Molar mass (MM) of Hg = 200.59g/lol
Hence, using mole = mass/MM
3.1 = mass / 200.59
mass = 200.59 × 3.1
Mass = 621.829
Mass = 621.83grams
How much force is required to accelerate an 8kg mass at 5m/s^2 if there is 14N of friction
Answer:
Explanation:
How much force is required to accelerate an 8kg mass at 5m/s^2 if there is 14N of friction.
Answer:
54 N
Explanation:
By Newton's second law the force acting on an object is related to its mass and acceleration
F = m x a where
where m = mass of the object and a is the acceleration
Here m = 8 kg and a = 5m/s² so
F = 8 x 5 =40 Newtons (measure of force)
But there is an opposite force due to friction of 14 Newtons
So net force required to overcome this friction and accelerate the object of mass 8kg to 5m/s² = 40 + 14 = 54 Newtons
A can of corn heas a diameter of 6.6 centimeters and a height of 9.9 centimeters. How much corn can tue can hold?
Answer:
338.7cm
Explanation:
The can of corn would be in the shape of a cylinder. Since we are looking at capacity, we will want to find the volume.
V=abase×h
V=πr2×h
V=π(d2)2×h
V=π(6.62)2×9.9
V=338.7cm3
Hopefully this helps!
Answer:
338.7 cm³
Explanation:
For this question you use the volume formula of a cylinder πr²h.
Radius is 1/2 the diameter.
Simply input the variables into the formula.
π(3.3)²×9.9 = 107.811π or approximately 338.7 cm³
A company claims to have built a perpetual motion device, which stays in motion without any energy input. Which statement best
summarizes the company's claim.
Answer:
It's Compleatly False
Explanation:
It would violate the first law of thermodynamics which states that energy cannot be created or destroyed, and these laws are not optional. Furthermore, A perpetual motion machine would have to produce work without energy input. The Second Law of Thermodynamics states that that an isolated system will move toward a state of disorder.
Two children are bouncing small rubber Ball. One child simply drops ball. At the same time, the second child throws a ball downward so that it has an initial speed of 10m/s what is the acceleration of each ball while in motion
The acceleration of each ball while in motion is the acceleration due to gravity, that is 9.81 m/s²
How to illustrate the information?Here one child simply drops a ball. The second child simultaneously launches a ball downward at a 10-meter-per-second initial speed.
In first case acceleration on the ball is the acceleration due to gravity, it should be noted that in the second case also acceleration on the ball is the acceleration due to gravity,
Therefore, only gravitational force is acting on both cases so their acceleration is the acceleration due to gravity. Therefore, the acceleration of each ball while in motion is the acceleration due to gravity, that is 9.81 m/s².
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The pattern shown in the photo is the result of a time-lapsr video of a clear night sky
Which mostly likely causes the apparent motion of the stars seen in this photo?
A. Earth's revolution around the Sun
B. The revolution of the Stars around the Sun
C. Earth's rotation on its axis
D. The revolution of the stars
around Earth
Answer:
C.
Explanation:
Answer:
C
Explanation:
The earths rotation on its axis
Acceleration is measured in what
Answer:
meters per second squared
m/s^2
Explanation:
Hope this helps! :3
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Answer:
Acceleration is measured in m/s2 (meters per second squared)
Explanation:
Suppose you are observing a binary star with a telescope and are having difficulty resolving the two stars. You decide to use a colored filter to maximize the resolution. (A filter of a given color transmits only that color of light.) What color filter should you choose? (a) blue (b) green (c) yellow (d) red
The color filter that a person need to choose is option (a) blue.
Why choose the blue color?The reduction of the wavelength of the light is one that tends to make the aperture to be bigger if it is said to be relative to the light wavelength, by rising the resolving power. So, one need to choose a blue filter.
The Blue light filter is one that can act by lowering the amount of blue light that is shown on the screen of telescope device.
note that the blue light can tends to suppress the creation of melatonin thus making it to be filtering it out.
Therefore, based on the above, The color filter that a person need to choose is option (a) blue.
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A log with a mass of 90.0 kg falls off a cliff with a height of 31.2 m cliff. Assume g = 9.8 ms-2 What energy transformation occurs?
Answer:
kinetic energy
Explanation:
What is the fault-current circuit breaker? Describe its function.
Answer:
A circuit breaker is a switching mechanism that interrupts the current that is irregular or fault. It is a mechanical system that interferes with high magnitude (fault) current flow and also performs a transfer operation. Hope this helps :)
Explanation:
Answer:
A circuit breaker is an electrical switch designed to protect an electrical circuit from damage caused by an overcurrent or short circuit.
Explanation:
Its basic function is to interrupt current flow after protective relays detect a fault.
Calculate the average acceleration for a car moving linearly and braking to a stop from 30 m/s in 5 seconds.
The average acceleration of the car moving linearly is 6 m/s².
What is acceleration?
Acceleration is a vector quantity that is defined as the rate at which an object changes its velocity.
a = Δv/Δt
where;
Δv is change in velocityΔt is change in time of motionThe average acceleration of the car moving linearly is calculated as follows;
a = 30 m/s / 5 s
a = 6 m/s²
Thus, the average acceleration of the car moving linearly is 6 m/s².
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How does hydropower generate electricity?
Answer:
the water spins the wheel wiche gives energy.
Explanation:
Which genus of single-celled organisms feeds by surrounding its food with cytoplasm and engulfing it?
A.Euglena
B.Volvox
C.Amoeba
D.Paramecium
Answer:b
Explanation:
b
Neha and Suhani are playing with two identical pendulums. They leave the bob from a certain position and wait for it to return to the same point. The one who waits for a shorter time wins. Neha leaves her pendulum from point L and Suhani leaves her pendulum from point P (see figure). What happens?
a. Neha wins as her bob comes back faster.
b. Suhani wins as her bob comes back faster.
c. No one wins as the bobs come back at the same time.
d. We cannot say any of the above for sure.
The one who waits for a shorter time wins. Neha leaves her pendulum from point L and Suhani leaves her pendulum from point P.Neha wins as her bob comes back faster. Therefore, option A is correct.
What is pendulum ?A weight suspended from a pivot such that it can freely swing is called a pendulum. Gravity's restoring force will cause a pendulum to accelerate back toward its equilibrium position if it is sideways moved from its resting, equilibrium position.
An object that is suspended from a fixed location by a string or rod and can move freely due to gravity and momentum. frequently used to control electronics like clocks. Simple pendulum: A back-and-forth swinging pendulum. A circularly swinging pendulum is referred to as a spherical pendulum.
The force of gravity acting on the swing causes it to move freely back and forth after being raised and released. The swing keeps returning.
Thus, option A is correct.
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how elements are arranged in the groups of periodic table
Cumulative Exam
Cumulative Exam Review
Active
2
Which best compares concave and plane mirrors?
Plane mirrors produce only virtual images, and concave mirr
Plane mirrors produce only real images, and concave mirror
Concave mirrors produce only real images, and convex mirro
Answer:
Explanation:
Hi! It would be A. Plane mirrors produce only virtual images,and concave mirrors produce real and virtual images.
Plane mirrors construct only virtual images, and concave mirrors make real and virtual images. Thus, this statement best corresponds concave and plane mirrors.
What are virtual images?A virtual image exists represented as the opposite of a real image, thus an image that cannot be obtained on a screen stands produced as a virtual image. The motivation for this exists in the fact that the beams of light that form a virtual image never connect therefore a virtual picture can never be projected onto a screen. Examples: Image formed in a plane mirror, an image constructed on the front and back surfaces of a spoon, etc.
Therefore, the (A) option exists as the accurate answer.
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A solid block of volume 6.0m^3 is placed under water whose density is 1000 kgm^3 (g=10Nkg^1)
a) what volume of water does the block displace?
b) What mass of water does the block displace?
c) what is the weight of the displaced Water?
d) How large is the upthrust which acts on the block ?
e) What will happen if the block is made ofwood of density 700kgm^3?
f) What will happen if the block is made of rock of density 3000kgm^3?
what is the mass of a vehicle that has 50,000 N and 25M/S/S
Answer:
F = 1250000 N
Explanation:
If you have 50,000 S, by 25 M. It would be calculated to 1,250,000 N.
Carlo and Sara push on a desk in the same direction. Carlo
pushes with a force of 50 N, and Sara pushes with a force of
40 N. What is the total resultant force acting on the desk?
Whats the answer to this question?
Answer:
90N
Explanation:
The total resultant force acting on the desk being pushed by Sara and Carlo is 90N
A resultant force is a singular force that will act the same effect as the forces acting on a body.
When two or more forces acts on a body in the same direction, their resultant is the sum of the individual forces. If it is in the opposite direction, the differences is the resultant force. The body will move in the direction of the applied force with a higher magnitudeSo;
Resultant force = Force applied by Sara + Force applied by Carlo
Resultant force = 50N + 40N = 90N
Below is a list of organisms and their tolerance to pollution. Which organism(s) would you expect to be remaining after the stream they lived in was polluted with man-made waste? Select all that apply.
Answer:
Black Flies, leeches and aquatic worms.
Explanation:
Black Flies, leeches and aquatic worms are the organisms that are tolerant to pollution and has the ability to survive in the polluted environment occur due to man-made waste. these organisms sometimes takes food from these pollutants and help in surviving these organisms. Without these tolerant organisms, those organisms which are not sensitive to these pollutants will die and removed from that polluted environment.
A rocket is in a roughly circular orbit near the surface of the earth, moving at around 5 miles per second. Suppose that it is desired to lower it to a new circular orbit, sliightly closer to the surface. The rocket flips over and fires its main rocket engine in a short burst to slow its speed to 4. 96 miles per second. What must it do next?.
The rocket slows its speed again a little when the distance from the earth stops decreasing.
While the rocket is in a roughly circular orbit near the surface of the earth and is moving at around 5 miles per second. To decrease it to a new circular orbit, slightly near to the surface. The rocket reverse and shoots its main rocket engine in a short burst to decrease its speed to 4. 96 miles per second. The response of the rocket is based on escape velocity which is referred to as the minimum speed required to reach an infinite distance for a free object to escape from the gravitational influence of an immediate body.
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Which other element is most likely to be a nonreactive gas?
A. Argon (AI)
B. Nitrogen (N)
C. Hydrogen (H)
D. Boron (B)
Answer:
A. Argon
Explanation:
It is a noble gas, a group which is not reactive.
Question 4 (1 point)
Select all of the BENEFITS of a SERIES circuit.
It uses more wire than a parallel circuit.
It is simple and cost effective to build.
The bulbs will stay on when one bulb breaks or burns out.
You will always know when there is a break in the circuit.
Answer:
D and C
Explanation:
C. The bulbs will stay on when one bulb breaks or burns out.
D. You will always know when there is a break in the circuit.
BENEFITS of a SERIES circuit:
Easy to design and build the circuit. If a component breaks, the current flow stops. It acts as a current regulator. The cost to build a Series Circuit is less compared to Parallel Circuit.Cells are connected in series give a greater resultant voltage than individual cells. Voltage increases if the number of cells increases. Series circuits do not overheat easily.The bulbs will stay on when one bulb breaks or burns out. You will always know when there is a break in the circuit.Therefore, option C and D are correct.
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describe Newton's law of gravitation and its application?
Answer:
Newton's law of gravitation states that every object in this universe attracts every other object with a force called gravity,
when the distance between the two object is increased the gravitational force decreases by its square,
and when the mass an object increases the gravitational force also increases,
therefore, gravitational force is directly proportional to the mass of the two objects and is square inversely proportional to distance between them.
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Explain how skeletal muscles work in pairs.
plzzzz answer asap !!
Answer:
it holds the bone and helps to move
I don't know if this is right
An alien spaceship traveling at 0.600 c toward the Earth launches a landing craft. The landing craft travels in the same direction with a speed of 0.800 c relative to the mother ship. As measured on the Earth, the spaceship is 0.200 ly from the Earth when the landing craft is launched.(c) What travel time is required for the landing craft to reach the Earth as measured by the aliens on the mother ship?
The travel time is required for the landing craft to reach the Earth as measured by the aliens on the mother ship is 4.5*10^6m/s.
To find the answer, we have to know about the Lorentz transformation.
What travel time is required for the landing craft to reach the Earth as measured by the aliens on the mother ship?It is given that, an alien spaceship traveling at 0.600 c toward the Earth, in the same direction the landing craft travels with a speed of 0.800 c relative to the mother ship. We have to find the time travel for the landing craft to reach the Earth as measured by the aliens on the mother ship.
It is given that; the spaceship is 0.200 ly from the Earth when the landing craft is launched.We have the expression for time travelled as,[tex]t=\frac{d}{v}[/tex]
where; d is 0.2 light years, and the value of v will be 0.8c+0.6c
[tex]t=\frac{0.2ly}{0.8c+06c} =\frac{0.2*9.46*10^{15}m}{1.4*3*10^8s} =4.5*10^6m/s[/tex]
Thus, we can conclude that, the travel time is required for the landing craft to reach the Earth as measured by the aliens on the mother ship is 4.5*10^6m/s.
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Help please.
How long is between each phase of the moon?
Answer:
The Moon actually takes 27.3 days to complete a single orbit around the earth. The Moon takes 29.5 days to complete one phase cycle.
Hope it helps!
Switch on your light source. Make sure it is shining onto a wall. Hold your largest plastic shopping bag square between the light source and the wall. What do you observe?
Since the plastic is not very thick, light rays can penetrate through when I hold my largest cardboard square between the light source and the wall. As a result, the cardboard tends to cast a shadow.
Based on the precise materials and light sources that were employed, the results of the cardboard experiment frequently differ.
Keep in mind that it is generally expected that reflective materials, such aluminum foil and mirrors, would reflect the specified or given light.
Since the plastic is not very thick, light rays do penetrate when I hold my largest cardboard square between the light source and the wall. As a result, the cardboard tends to cast a shadow when held in this position.
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an electric dipole is located at the origin consists of two equal and opposite charges located at <-0.01, 0, 0>m and <0.01, 0 ,0 >m. the electric field at <0,1,0>m has a magnitude of 1 n/c. what is the approximate magnitude of the electric field at <0,2,0>m
The approximate magnitude of the electric field at <0,2,0>m is 0.
What is magnitude?Size alludes to the reviewing of the splendor of stars, the first being the most splendid. It has been moved to different issues since essentially the seventeenth hundred years. A size is the estimation or outright worth of an amount. A size is addressed by a positive genuine number. In Physics, greatness is characterized as the most extreme degree of size and the course of an article. Greatness is utilized as a typical calculate vector and scalar amounts. By definition, we realize that scalar amounts are those amounts that have size as it were.
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The frame of reference for an outside observer of a moving
bus might be a house across the street.
-TRUE
-FALSE
Answer:
false
Explanation:
a Model Changing classes, you walk 20.0 m down a
hall, turn left, and then walk 10.0 m down another hall. Define a
coordinate system and sketch the displacement vector. Also, sketch the
displacement components, and then determine the vector's magnitude.
Answer:
Explanation:
potato :D