Answer:
13700 kg÷m2Explanation:
100c+13600kg÷m2
The density of mercury is 13600 kg / m³ at 0 °C. Its density at a temperature of 100 °C is 0.735 × 10⁻⁴ kg / m³.
What is density?The mass of a material substance per unit volume is its density. The formula for density is [tex]d = M/V[/tex] Where d represents density, M is mass, and V is volume. Density is commonly measured in grams per cubic centimeter.
As an example, the density of Earth is 5.51 grams per cubic centimeter, but the density of water is 1 gram per cubic centimeter.
Given:
The density of mercury, d = 13600 kg / m³,
The temperature difference. ΔT = 100 - 0 = 100 °C,
Calculate the change in volume if the mass is 13.6 kg and the coefficient of cubical expansion is 1.82×10⁻⁴ °C⁻¹ by the formula given below,
ΔV = V α ΔT
ΔV = (13.6 ÷ 13600) × 1.82 × 10⁻⁴
ΔV = 0.00182 × 10⁻⁴ m³
New volume V₁ = V + ΔV = 13.6 ÷ 13600 + 0.00182 × 10⁻⁴
New density d₁ = V₁ / 13.6 = 10.00182 × 10⁻⁴ / 13.6 = 0.735 × 10⁻⁴ kg / m³
Therefore, the density of mercury is 13600 kg / m³ at 0 °C. Its density at a temperature of 100 °C is 0.735 × 10⁻⁴ kg / m³.
To know more about Density:
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Which is moving faster a car traveling 150 km in 3 hours or one traveling 100 km in 2 hours?
Velocity is different from speed because it has both size and... what?
Velocity is size and direction
Naomi is taking a train from DC to New York which is 360km apart. If the train is traveling at an average speed of 32 meters per second, how much time will it take Naomi to get to new work
Answer:
11250 seconds or 187.5 mins
Explanation:
The formula to be used here is that of speed.
Speed (in m/s) = distance (meter) ÷ time (secs)
The speed provided is 32 meters per second
The distance provided will have to be converted to meters; 360 km = 360 × 1000 = 360000 meters
Thus,
32 = 360000 ÷ time
time = 360000 ÷ 32
time = 11250 seconds or 187.5 mins
It will take Naomi 11250 seconds to get to New York
What does Radioactivity mean?
Answer:
Radioactivity means: the emission of ionizing radiation or particles caused by the spontaneous disintegration of atomic nuclei.
Explanation: I hope this helps! :)
Answer:
sending out harmful radiation caused when the nuclei (=central parts) of atoms are broken up.
A football is thrown with a horizontal velocity of 15.0 m/s and a vertical velocity of 4.25m/s. What is the football's velocity?
ANSWER EVERYTHINGG PLEASE
PLEASE HELPPPP You have a oxygen atom that is looking to bond. How many atoms of one element from column 1 would need to bond with that oxygen to form an ionic bond? Why?
Answer:
Two atoms from column 1. Each would give 1 electron to the Oxygen. Oxygen will be 2- and each group 1 ion will be 1+
Explanation:
Sorry if Im wrong
what is the net force
Answer:
20 N in West direction.
Explanation:
opposite forces cancel each other. so 20 N in north and 20N in south cancel each other. In west and east direction...
70N in west-50N in east= 20N in west
Which is unnecessary to include when accurately drawing ray diagrams?
focal point
lens
focal length
three easy rays
Answer:
Focal length
Explanation: No need for one...
Focal length is unnecessary to include when accurately drawing ray diagrams.
What is Focal length?The focal length is the distance, in millimeters, between the lens' optical center and the camera sensor, which records light data.
The elements inside the housing of a lens bend and shape light as it enters the front so that it converges into a single point of focus known as the "optical center."
It is crucial to remember that this measurement is made with the camera set to infinity and that lenses are named according to their focal length, which is indicated on the lens' barrel.
Therefore, Focal length is unnecessary to include when accurately drawing ray diagrams.
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a bird is traveling west with a velocity of 8 m/s and momentum of 40 mg*m/s what's the birds mass?
Answer:
m = 5 [mg]
Explanation:
We must remember that the definition of linear momemtum is defined as the product of mass by distance.
P = m*v
P = momentum = 40 [mg*m/s]
m = mass [mg]
v = velocity = 8 [m/s]
Now clearing m:
m = P/v
m = 40/8
m = 5 [mg]
A paintball is fired horizontally from a tower 45 m above the ground. If the paintball gun fires at 90 m/s… How long does it take for the paintball to hit the ground? How far away from the tower will the paintball land?
Answer:
The time taken for the paint ball to hit the ground is [tex]t = 2.143 \ s[/tex]
The distance of the landing point from the tower is [tex]d = 192.86 \ m[/tex]
Explanation:
From the question we are told that
The height of the tower is [tex]h = 45 \ m[/tex]
The speed of the paintball in the horizontal direction is [tex]v_x = 90 \ m/s[/tex]
Generally from kinematic equation we have that
[tex]h = ut + \frac{1}{2} at^2[/tex]
Here u is the initial velocity of the paintball in the vertical direction and the value is 0 m/s , this because the ball was fired horizontally
a is equivalent to [tex]g = 9.8\ m/s^2[/tex]
t is the time taken for the paintball to hit the ground
So
[tex]45 = 0* t + \frac{1}{2} 9.8 * t^2[/tex]
=> [tex]t = 2.143 \ s[/tex]
Generally the distance of its landing position from the tower is
[tex]d = v * t[/tex]
=> [tex]d = 90 * 2.143[/tex]
=> [tex]d = 192.86 \ m[/tex]
What moon phase would happen immediately before the shown phase?
Waning Crescent
Waxing Gibbous
Full Moon
New Moon
Answer:
waning crescent
Explanation:
Waxing Crescent - Rises before noon, transits meridian before sunset, sets before midnight
Answer:
new moon
Explanation:
yea im sure
can i get the brainliest? or not ok T-T im always alone i know and nobody doesnt like me so yes u are right im always alone for forever
and nobody doesnt wanna chat with me ok i got it bcoz thats all my bad im a bad person :(
The whale shark is the largest of all fish and can have the mass of three adult
elephants. Suppose that a crane is lifting a whale shark into a tank for delivery
to an aquarium. The crane must exert an unbalanced force of 2.5 x 104 N to
lift the shark from rest. If the shark's acceleration while being lifted equals
1.25 m/s², what is the shark's mass?
Answer:
m = 20,000 kg
Explanation:
Force, [tex]F=2.5\times 10^4\ N[/tex]
Acceleration of the shark, [tex]a=1.25\ m/s^2[/tex]
It is required to find the mass of the shark. Let m is the mass. Using second law of motion to find it as follows :
F = ma
Putting the value of F and a to find m
[tex]m=\dfrac{F}{a}\\\\m=\dfrac{2.5\times 10^4}{1.25}\\\\m=20,000\ kg[/tex]
So, the shark's mass is 20,000 kg.
A 20kg block is sliding down a 30° ramp at a constant velocity. Calculate the normal force acting on the block. Calculate the coefficient of kinetic friction between the block and the ramp.
Let me try:
Normal force= 169.74N
Coefficient of kinetic friction= 0.577
Explanation
a. For a given inclined plane, normal friction is equal to the force perpendicular to the plane which is equal to
mgcos theta = 20×9.8× cos30 = 169.74N
b. The coefficient of kinetic friction for an inclined plane is given as
tan theta =tan 30 = 0.577
Diane is training for a marathon and goes to the track (400 m) to run every morning.
If Diane runs around the track four times, what is her final displacement?
280 m
If Diane runs around the track 6 times, what is the distance she travels?
Tap the point on this graph where the ball has the greatest Kinetic Energy if it were to move from Point A to G. Target Image
I don't understand the question
Answer:
As the ball falls from C to E, potential energy is converted to kinetic energy. The velocity of the ball increases as it falls, which means that the ball attains its greatest velocity, and thus its greatest kinetic energy, at E. 19.
Explanation:
Physical activity increases your risk for coronary artery disease. true false
Answer:
false here is why :)
Explanation:
Regular, moderate-intensity physical activity reduces the risk of developing coronary heart disease and can reduce the likelihood of dying from heart disease.
hope this helped.
15 points. give me the method.
4.The difference of wavelength of two waves of frequencies 640Hz and 480Hz respectively in a certain medium is 1m. Find the velocity of sound in that medium.
Answer:
[tex] \boxed{{160 \: m(s)}^{ - 1} }[/tex]
Explanation:
[tex]if \:the \: frequencies \: are \to \\ f_{1} = 640Hz \\ and \\f_{2} = 480Hz \: \\ but \: \boxed{v = f \gamma }: f = \frac{v}{ \gamma } \\ if \: \gamma_{1} - \gamma _{2} = 1 = \gamma \\ f_{1} - f_{2} = 640 - 480 = \boxed{ 160Hz} = f \\ v = f \gamma = 160 \times 1 = \boxed{{160 \: m(s)}^{ - 1} }[/tex]
WILL GIVE BRANLIEST TO WHOEVER ANSWERS CORRECTLY
We are going to design a free-fall ride in which our vehicle has a velocity of 33m/s once the vehicle reaches the bottom.
Calculate how tall the ride would have to be in order for the vehicle to reach a velocity of 33m/s.
Answer:
We might know that the greater the acceleration of, say, a car moving away from a stop sign, the greater the displacement in a given time. But we have not developed a specific equation that relates acceleration and displacement. In this section, we develop some convenient equations for kinematic relationships, starting from the definitions of displacement, velocity, and acceleration already covered.
Explanation:
Answer:9 meters?
Explanation:
a particle starts from rest and moves with a constant acceleration of 0.5 m/s². Calculate the time taken by particle to cover a distance of 25 m
4.
You are riding your bike and you slam on your breaks. What is most likely the accelerations that your bike undergoes? this is a quiz
Answer:
This question appear incomplete
Explanation:
This question appear incomplete because of the absence of options but when you slam on the brakes when riding a bike or other vehicles, the bike undergoes deceleration. Deceleration is a type of acceleration with a negative value which usually points in the opposite direction of the velocity. As described in the question, deceleration is usually brought about by a decrease in magnitude of a velocity.
Please need help ASAP 15 points????I need a,b,c
Answer:
The acceleration is negative and very close to zero.
Very Small, because it slowly comes to a stop, which means there is nothing to stop it any faster
It would keep traveling in that direction without slowing down
Explanation:
Answer:
A,B,C
Explanation:
A) because the ball is slowing down that means that the acceleration is changing and is slowing. It also means that it has negative acceleration because it is going the opposite way of velocity. When it stops then there is no more acceleration
B) Net force is calculated by the sum of the forces that are acting on the object. If the net force is unbalanced then it will speed up, slow down, or change direction. So basically, net force is an unopposed force that causes a change in motion. First, it has a net force because it's moving and is not in equilibrium. Second, the net force would be changing as it is stopping. When it stops then it would be in static equilibrium. Basically, the net force is changing as the speed slows down until it comes to a state of equilibrium.
C) If it was in space then it would never stop. Because of the law of inertia, an object in motion will stay in motion as long as there are no other opposing forces. Because there really aren't opposing forces in space, it would keep on going forever.
Select all the correct answers. The eight planets in alphabetical order are Earth, Jupiter, Mars, Mercury, Neptune, Saturn, Uranus, and Venus. Half of them are inner planets and half of them are outer planets. Which of these planets are inner planets? Mercury Jupiter Earth Mars
Answer:
The inner planets (in order of distance from the sun, closest to furthest) are Mercury, Venus, Earth and Mars. After an asteroid belt comes the outer planets, Jupiter, Saturn, Uranus and Neptune
Explanation:
Answer:
The inner planets (in order of distance from the sun, closest to furthest) are Mercury, Venus, Earth and Mars. After an asteroid belt comes the outer planets, Jupiter, Saturn, Uranus and Neptune
Explanation:
A 15 kg object has a momentum of 150 kg-m/s north. What is the object's
velocity?
O A. 135 m/s
O B. 2,250 m/s
O C. 0.1 m/s
O D. 10 m/s
Answer:
10 m/s
Explanation:
divide 150 by 15
Answer:
[tex]\boxed {\boxed {\sf D. \ 10 \ m/s}}[/tex]
Explanation:
Momentum can be found by multiplying mass by velocity.
[tex]p=mv[/tex]
If we rearrange this formula for velocity (v), then the formula becomes:
[tex]\frac{p}{m}=\frac{mv}{m}[/tex]
[tex]\frac{p}{m} =v[/tex]
We have to divide the momentum by the mass. The momentum is 150 kg*m/s and the mass is 15 kilograms.
[tex]p=150 \ kg*m/s\\m=15 \ kg[/tex]
Substitute the values into the formula.
[tex]\frac{150 \ kg *m/s}{15 \ kg} =v[/tex]
Divide. Note that the kilograms (kg) will cancel each other out.
[tex]10 \ m/s=v[/tex]
The velocity of the object is 10 meters per second.
As the frequency of a wave increases...
A.)the energy carried by the wave decreases
B.)the wavelength of the wave decreases
C.)the amplitude of the wave decreases
D.)the speed of the wave increases
How do you think weather can increase the demand for electricity?
Someone help me! it's 1:23am were i live and i feel like my brain is going to implode
Answer:
Extreme temperatures can increase demand for heating and cooling, and the resulting increases in electricity demand can push up fuel and electricity prices.
Explanation:
What is a super dense gravitationally collapsed mass from which no light
can escape called?
1) neutron star
2) pulsar
3) supernova
4) black hole
Which of the following is an example of a luminous object?
Dog
Tree
Candle
Moon
Answer:
Candle
Explanation:
The moon is an illuminated object, while a candle is a luminous object!
Answer:
Candle
Explanation:
I just took the test
The human body is a system of systems that rely on each other to sustain a life. Explain how.
A car, initially traveling at 5 meters per second north, accelerates to 25 meters per second north in 4.0 seconds. Determine the magnitude and direction of the car's acceleration.
Answer:
a = 5 [m/s²]
Explanation:
To solve this equation we must use the following equation of kinematics.
[tex]v_{f} =v_{o} +a*t[/tex]
where:
Vf = final velocity = 25 [m/s]
Vo = initial velocity = 5 [m/s]
a = acceleration [m/s²]
t = time = 4 [s]
Note: The positive sign for the acceleration in the above equation means that the car is increasing its velocity.
25 = 5 +a*(4)
25 - 5 = 4*a
20 = 4*a
a = 5 [m/s²]
