Answer:
15,115 J of the total energy is transformed to thermal energy during the game.
Explanation:
From the law of conservation of energy, initial energy of the closed system E = final energy of closed system , E'
E = E'.
Let ME = initial mechanical energy of the system = 16,250 J and U = initial internal energy of the system and ME' = Final mechanical energy of the system = 1,135 J and U' = Final internal energy of the system.
So E = ME + U and E' = ME' + U'
We now find U and U'
Substituting E, ME, E' and ME' into the equations, we have
E = ME + U
17,125 J = 16,250 J + U
U = 17,125 J - 16,250 J
U = 875 J
E' = ME' + U'
17,125 J = 1,135 J + U'
U' = 17,125 J - 1,135 J
U' = 15,990 J.
The change in internal energy is also the change in thermal energy. So,
ΔU = U' - U
ΔU = 15,990 J - 875 J
ΔU = 15,115 J
So 15,115 J of the total energy is transformed to thermal energy during the game.
a uniform 5.00 m long ladder of mass 25.0 kg leans against a frictionless wall. if the ladder makes an angle of 60 degrees with the floor and coefficient of static friction with the floor is 0.45, calculate the forse from the force
The force exerted on the ladder by the floor is 55.18 N.
To calculate the force exerted on the ladder by the floor, we need to consider the forces acting on the ladder. There are two forces acting on the ladder, namely, the gravitational force and the normal force from the floor.
The gravitational force can be calculated using the formula \(F\_gravity = m * g\), where m is the mass of the ladder and g is the acceleration due to gravity, which is 9.81 m/s^2. Thus, the gravitational force acting on the ladder is \(F\_gravity = 25.0 kg * 9.81 m/s^2 = 245.25 N\).
The normal force from the floor can be calculated using the formula \(F\_normal = F\_gravity * cos(theta)\), where theta is the angle between the ladder and the floor. Thus, the normal force from the floor is \(F\_normal = 245.25 N * cos(60) = 122.62 N.\)
To calculate the force exerted on the ladder by the floor, we need to determine if the ladder will slip or not.
Since the coefficient of static friction between the ladder and the floor is given to be 0.45, we can calculate the maximum force that can be exerted on the ladder without causing it to slip using the formula F_friction = friction coefficient * F_normal.
Thus, the maximum force that can be exerted on the ladder without causing it to slip is\(F\_friction = 0.45 * 122.62 N = 55.18 N\).
Since the force exerted on the ladder by the floor cannot exceed the maximum force of 55.18 N, we can conclude that the force exerted on the ladder by the floor is 55.18 N.
For more such questions on force, click on:
https://brainly.com/question/12785175
#SPJ11
write 3500 in units with the appropriate prefixes
If we are to write 3500 in units with the appropriate prefixes, this would be 3.5kg.
What is SI Unit?This refers to the metric system that is used and accepted internationally and is used as a standard for the measurement of items
Hence, when it comes to the use of SI Units, the name of the unit with the prefixes deka, hecto, and kilo are used, meaning, respectively, 10, 100, and 1000.
With this in mind, 1000 units would make one kilo and if we are to write this mathematically this would be 3500 divided by 1000 which is 3500/100, and which would be 3,5.
Therefore, the correct answer is 3.5kg.
Read more about SI Units here:
https://brainly.com/question/15657466
#SPJ1
Answer:
3*10^3 g or 0.3*10^4 g
Explanation:
A piece of wood of mass 300 g has a volume of 400 cm3
Find the density of the wood.
Answer: 0.75 g/cm³
Explanation:
FORMULA
Density=mass/volume
-----------------------------------
Given: mass is 300 g, volume is 400 cm³
Density=mass/volume
Density=300/400
Density=3/4
Density=0.75 g/cm³
Hope this helps!! :)
Please let me know if you have any question
A sound wave travels to a high wall which is 225m away from the source and is then reflected back to is initial position If the speed of sound in air as 340ms", calculate the time it takes to hear the echo.
Answer:
1.32 (3sf)
Explanation:
total distance the sound wave travel= 225 x 2= 450m
450 ÷ 340= 1.32s
which quantities should be gaphed on the vertical and horizontal axes to yield a striaght line whose slope could be used to calculate a numerical value for the acceleration due to gravvity g?
To determine g, you must graph distance vs. time squared. When you draw a straight line that passes through the origin of this graph, you can use the slope of the line to determine the acceleration due to gravity g.
To yield a straight line whose slope could be used to calculate a numerical value for the acceleration due to gravity g, the quantity that should be graphed on the vertical axis is the distance (d) and the quantity that should be graphed on the horizontal axis is the time (t). Gravity acceleration, denoted by the letter "g," is the rate at which a falling object increases its speed. A constant acceleration is generated by gravity acceleration, and it is used to describe falling bodies. In any experiment to determine the acceleration due to gravity g, the distance an object travels over a period of time must be measured, recorded, and plotted.
The equation to use for measuring the distance d is: d = 1/2gt^2. The above equation shows that distance d depends on the time t and gravity acceleration g. We can rewrite the equation to give the acceleration due to gravity g by dividing both sides by t^2:g = 2d/t^2. Therefore, to determine g, you must graph distance vs. time squared.
Learn more about acceleration : https://brainly.com/question/26408808
#SPJ11
1. A rug sits in a sunny place on the floor for a long time. Kiara thinks that light from the sun can
cause the rug's color to fade over time. Can light from the sun cause the rug's color to fade?
a
No. Light is not a physical thing, so it cannot change physical things like rugs.
b
No. Light can only change things by warming them up, so it cannot cause the rug's color to
fade.
Yes. The rug can take in energy from the light, causing the rug's color to fade.
d
Yes. Light from the sun can pull energy out of the rug, causing the rug's color to fade.
Answer:
yes
Explanation:
the rug can take energy from the light causing the rug's color to fade
Yes, Kiara is right because the rug can take in energy from the Sun's light, thereby causing the rug's color to fade: C. Yes. The rug can take in energy from the light, causing the rug's color to fade.
The Sun is typically characterized by nuclear reactions that usually takes place or occur at its center, which eventually result in the release of radiant (heat) energy and electromagnetic radiation into planet Earth.
Although, these radiant (heat) energy and electromagnetic radiation from the Sun are essential and very important to life on planet Earth.
However, a disadvantage of radiant (heat) energy is that when taken in by conducting materials such as rugs, it causes their color to fade (change) over time.
In conclusion, Kiara is absolutely right in her thinking because light energy (sunlight) from the Sun can cause the rug's color to become faded over time.
Read more: https://brainly.com/question/1251115
a circuit is connected to 8 volt battery and it has 2 amperes of current flowing through the wires.What is the resistance of the circuit
Answer:
4 ohms
Explanation:
Current = Voltage/resistance
2 = 8/R
2R = 8
R = 4
Anita drives for 3 hours at a speed of 60 km/h. How far will she travel?
Answer:
She will travel 180 kilometers.
Explanation:
You take the time and multiply it by your distance, and you get your total distance.
d = v.t
d = 60 km/h x 3 h
d = 180 km
When a cannonball is fired from a cannon, the momentum of the recoiling cannon is momentarily?1)the same as that of the fired cannonball2) less than the momentum of the fired cannonball3) greater than the momentum of the fired cannonball4) equal and opposite to the momentum of the fired cannonball
When a cannonball is fired from a cannon, the momentum of the recoiling cannon is momentarily option 4) equal and opposite to the momentum of the fired cannonball.
This is due to the law of conservation of momentum, which states that the total momentum of a closed system remains constant. In this case, the momentum of the cannonball and the momentum of the cannon are equal in magnitude but opposite in direction, resulting in a net momentum of zero.
The law of conservation of momentum states that unless an outside force acts on a system, its overall momentum stays constant. The cannon and the cannonball make up the mechanism when a cannon fires a cannonball. When a cannonball is fired, it gains momentum in one direction, and the cannon recoils with an equal and opposite momentum in the other direction. As a result, the right response is 4) equal to and in the opposite direction of the cannonball's momentum. The third law of motion of Newton, which asserts that there is an equal and opposite reaction to every action, describes this as the principle of action and reaction.
Learn more about momentum here:
https://brainly.com/question/14342447
#SPJ11
Please help
How would u define energy
Energy is being produced in two different ways.
1st. when you run, exercise, etc allot of energy is being produced from your body in form of heat.
2nd. energy which is in form of coal, electricity, gas etc.
Definition: the capacity for doing work. It may exist in potential, kinetic, thermal, electrical, chemical, nuclear, or other various forms. There are, moreover, heat and work—i.e., energy in the process of transfer from one body to another.
hope this helps you
have a great day :)
Choose the word that BEST completes the following sentence:
_________________________ cannot be created or destroyed.
All
Mass
Matter
Galaxies
Stars
Hi there!
Answer:
Matter
Explanation:
To find the correct answer, you have to try all of the answers. Like below:
All cannot be created or destroyed.
This doesn't make sense.
Mass cannot be created or destroyed.
This may sound correct, but when you look at the big picture, this is wrong.
Matter cannot be created or destroyed.
This is correct because it is a saying created long ago and proven with experiments.
Galaxies cannot be created or destroyed.
This is wrong because new galaxies are being created everyday!
Stars cannot be created or destroyed.
This is wrong because like galaxies, new stars are being created everyday!
A double inclined plane that moves is a(n) .
Answer:
a wedge.
Explanation:
it moves when you apply force to one end of the wedge.
A boy of mass 40kg and a girl of mass 30kg play on a see-saw of negligible weight. If the boy sits 270 cm from the pivot of the see-saw, where must the girl sit to make it balance.
Please show the steps....I will follow you if you do.
Hi there!
To solve, we can use a summation of torques.
For the see-saw to balance, the sum of torques must equal 0, so:
∑τ = 0
Recall that:
τ = rFsinθ
r = distance from pivot (meters)
F = force (N)
In this case, the forces are the weight of the children. Also, we can leave the distance in centimeters for this type of problem, but others do require a conversion to meters.
Multiply each mass by 10 (g ≈ 10 m/s²) to get the weight:
Στ = 270(400) - x(300) = 0
270(400) = 300x
Solve for 'x', the distance in cm away from the fulcrum:
108000/300 = 360 cm
a spherically symmetric planet has four times the earth's mass and twice its radius. if a jar of peanut butter weighs 12 n on the surface of the earth, how much would it weigh on the surface of this planet?
The weight of a peanut butter will be same as it is on earth, which means weight will be 12 N.
Weight is nothing but a force of gravity applied on the object.
The amount of force is = mg = W .
where, m = mass of the object and g is the acceleration due to gravity.
In this expression of weight, g depends on mass and radius of planet.
So, g' is the acceleration on another planet
g' = \(\frac{G M}{R^{2} }\)
putting the values, we get
g' = \(\frac{G 4Me}{(2Re)^{2} }\) = \(\frac{G 4Me}{4Re^{2} }\) = \(\frac{G Me}{Re^{2} }\) = g (acceleration due to gravity)
Here we see that g' on another planet is same as g which is the acceleration due to gravity.
So weight will be as "mg" , same as on earth.
Hence the weight of a jar of peanut buffer will be 12 n.
To learn more on gravity, visit here
https://brainly.com/question/21500344
#SPJ4
the top and bottom ends of a windshield wiper blade are 33 inches and 13 inches, respectively, from the pivot point. while in operation, the wiper sweeps through 165°.
The area swept by the wiper blade is 1324.04 inches^2.
The top and bottom ends of a windshield wiper blade move in the form of a circle.
The area swept by the wiper blade can be calculated by subtracting the area covered by the bottom end by the area covered by the top end i.e,
Area swept by blade(A) = Area covered by top end of blade - Area covered by bottom end of blade
A = A1 - A2
A1 = π(13)^2 x 165/360 = 1567.25 inches^2
A2 = π(33)^2 x 165/360 = 243.21 inches^2
A= 1567.25 - 243.21 = 1324.04 inches^2
Thus, the area swept by the wiper blade is 1324.04 inches^2.
To know more about "area of a sector of a circle", refer to the following link:
https://brainly.com/question/25265798?referrer=searchResults
#SPJ4
Convert the following number in scientific notation to standard notation: 3 × 10^3
ASAP I NEED IN 3 MINUTES PLS
The number 3 x 10 ³ in scientific notation can be written in standard notation as 3000.
What is Standard notation?Standard notation of a number is when a number is written with only number digits. For example - if the number is 2 x 10², then in standard from it can be written as 200.
Given is a number is a number in scientific notation. The number is -
3 x 10 ³.
Assume that the number -
A = 3 x 10 ³
and its expression in standard notation is B.
In order to write it in standard notation, we have to eliminate the 10ⁿ term which is 10 ³. 10 ³ can be written as 1000. Therefore, the number in standard notation will be -
A = 3 x 1000
A = 3000
Hence, in standard notation the number 3 x 10 ³ in scientific notation is 3000.
To solve more questions on Standard notation visit the link below-
https://brainly.com/question/20756241
#SPJ1
two asteroids are 75000 m apart one has a mass of 8 x 10^7 kg if the force of gravity between them is 1.14 what is the mass of the asteroid
3.4 x 10^11 kg
8.3 x 10 ^12 kg
1.2 x 10 ^12 kg
1.2 x 10^10 kg
Answer:
1.2×10¹² kg
Explanation:
from
\(f = \frac{gm1m2 }{r {}^{2} } \)
\(m2 = \frac{fr {}^{2} }{gm1} \)
\(m2 = \frac{1.14 \times (75000 { )}^{2} }{6.67 \times {10}^{ - 11} \times 8 \times {10}^{7} } \)
HENCE M2= 1.2×10¹²kg
which of the following options is not mandated for a ci pipeline?
a.terraform
b.chef
c.maven
d.selenium
The option that is not typically mandated for a CI (Continuous Integration) pipeline is d. Selenium.
CI pipelines are designed to automate the build, testing, and deployment processes, aiming to deliver software more efficiently and with higher quality. While options a. Terraform, b. Chef, and c. Maven are commonly used in CI pipelines, d. Selenium is not typically mandated for CI pipelines.
Selenium is a popular framework for automating web browser interactions and performing functional testing. While functional testing is an essential part of the software development lifecycle, it is not inherently tied to the CI pipeline. Selenium can be utilized separately as part of a testing strategy but is not a mandatory component of a CI pipeline.
The other options mentioned, Terraform, Chef, and Maven, are commonly used for infrastructure provisioning, configuration management, and build automation respectively, which are frequently integrated into CI pipelines.
To know more about software development please visit:
https://brainly.com/question/32243397
#SPJ11
what is relative density?
Billy jumps upward with a velocity of 4.2 m/s off a 6m high diving board. how long does it take for Billy to hit the water?l
Billy jumps upward with a velocity of 4.2 m/s off a 6m high diving board. . Billy will take 0.43 sec to hit the water
The branch of physics that defines motion with respect to space and time, ignoring the cause of that motion, is known as kinematics.
using equation of kinematics
v = u + g*t
sign convention
positive y direction (upward) = +
negative y direction ( downward ) = -
v = u - g*t
0 = 4.2 - ( 9.8 * t )
t = 4.2 / 9.8
t = 0.43 sec
Billy will take 0.43 sec to hit the water
To learn more about equation of kinematics here:
https://brainly.com/question/14355103
#SPJ1
An full shopping cart with a mass of 100. kg is moving at 5.0 m/s and runs into a stationary shopping cart that is empty (30. kg). After the collision, the full shopping cart is moving at 2.7 m/s. What is the empty shopping cart moving at?
The empty shopping cart is moving at 7.67 m/s.
What is law of conservation of momentum?According to the law of momentum conservation, momentum is only modified by the action of forces as they are outlined by Newton's equations of motion; momentum is never created nor destroyed inside a problem domain.
Total initial momentum = total final momentum
100 kg ×5.0 m/s + 30 kg ×0 m/s = 100 kg ×2.7 m/s + 30 kg ×v
v = (5.0 - 2.7)(100/30) m/s
= 7.67 m/s.
Hence, the empty shopping cart is moving at speed of 7.67 m/s.
Learn more about momentum here:
https://brainly.com/question/17166755
#SPJ1
4. 10 pts possible
The Mofo Dam holds back a depth of 60 feet of water, but the lake
behind the dam is 100 feet wide. The Fus-Ro-Dah Dam holds back a
depth of 50 feet of water, but the lake behind the dam is 2 miles wide.
If the dams are to be constructed in the same way, which dam had to
be constructed to be strongest? (The water levels do not vary
seasonally. )
Mathematically, the Mofo dam has a depth of 60 feet of water, and Fus-Ro-Dah Dam has a depth of 50 feet of water.
Hence, the Mofo dam is constructed to be the strongest.
What dam is constructed to be strongest?Question Parameters:
The Mofo Dam holds back a depth of 60 feet of water
The Fus-Ro-Dah Dam holds back a depth of 50 feet of water,
the lake behind the dam is 2 miles wide.
Generally, The main independent factor to be considered is the depth of a dam, as its the depth of water that applies the most pressure on dams, So the only effective factor is depth.
In conclusion, the Mofo dam because it holds back a depth of 60 feet of water, While the Fus-Ro-Dah Dam holds back a depth of 50 feet of water,
Read more about Lenght
https://brainly.com/question/8552546
You make yourself and your friend a cup of hot chocolate and add vanilla ice cream. You quickly enjoy yours, but your friend takes a long time to come, so you get to observe theirs as a science experiment.
In what direction does the heat flow? (2 points)
Describe how the kinetic energy of the hot chocolate changes once you add the ice cream. (2 points)
How does the kinetic energy of the ice cream change once you put it in the hot chocolate? (2 points)
What happens to the temperature of each substance? Be specific. (2 points)
When will the temperature of the ice cream and the hot chocolate stop changing? (2 points)
Answer:
How does the kinetic energy of the ice cream change once you put it in the hot chocolate?
Explanation: ice cream is cold when the hot chocolate is hot
Answer:
Explanation:
Heat always flows from HOT to COLD.
KE of hot chocolate decreases.
KE of ice cream increases.
Temp. of hot chocolate decreases (it cools down), temp. of ice cream increases (it warms up).
Temp. of each will stop changing when the 2 substances reach equilibrium (no more flow of heat).
A 10 nC charge sits at a point in space where the magnitude of the electric field is 1900 N/C. What will the magnitude of the field be if the 10 nC charge is replaced by a 20 nC charge? Assume the system is big enough to consider the charges as small test charges. E= ____ N/C?
Assume the system is big enough to consider the charges as small test charges. E= 3.8 × 10^4 N/C
The magnitude of the electric field at a point in space due to a point charge is given by the Coulomb's law as:
E = k * Q / r^2
where k is Coulomb's constant, Q is the charge, and r is the distance from the point charge.
In this case, the electric field magnitude at the point due to the 10 nC charge is given as 1900 N/C. So we can solve for k using the given values:
k = E * r^2 / Q
k = 1900 N/C * (1 m)^2 / (10 nC)
k = 1.9 × 10^11 N·m^2/C^2
Now, we can use this value of k to find the magnitude of the electric field when the charge is replaced by 20 nC:
E' = k * Q' / r^2
E' = (1.9 × 10^11 N·m^2/C^2) * (20 nC) / (1 m)^2
E' = 3.8 × 10^4 N/C
Therefore, the magnitude of the electric field when the 10 nC charge is replaced by a 20 nC charge would be 3.8 × 10^4 N/C.
To learn more about magnitude, click here:
https://brainly.com/question/14452091
#SPJ11
A light ray travels through air and then passes through a thin rectangular glass block. It exits (a) parallel to the original direction. (b) bent toward the normal line. (c) along the identical path that it entered the block. (d) bent away from the normal.
A light ray travels through air and then passes through a thin rectangular glass block. It exits b) bent towards the normal line.
In optics, the angle of incidence (θi) is the angle that a line or ray of light coming from a source makes with a perpendicular line that indicates the surface or interface it hits. The normal is an imaginary line that is perpendicular to the surface or interface.
The angle of reflection (θr) is the angle that the line or ray of light makes with the normal line after it has reflected off the surface.The angle of refraction (θt) is the angle that the line or ray of light makes with the normal line after it has refracted through the surface.
When a light ray passes through a glass block, it is refracted by the surface. When the light ray passes through the glass surface, it changes direction since the speed of light is slower in the glass than in the air.
This bending is referred to as refraction, and it is dependent on the indices of refraction of the two materials. The angle of refraction is determined by Snell's law, which states that the ratio of the sine of the angle of incidence to the sine of the angle of refraction is constant for any two materials.
Snell's law is a relationship between the angles of incidence and refraction of a wave that crosses the boundary between two media with varying refractive indices.
It is represented as: n1 sinθ1=n2 sinθ2where:n1 is the refractive index of medium 1.θ1 is the angle of incidence of the light ray.n2 is the refractive index of medium 2.θ2 is the angle of refraction of the light ray.
Know more about Snell's law here,
https://brainly.com/question/31432930
#SPJ11
how could the student estimate the average speed in the first 8 hours
Answer:
use this formula
Average Speed = (Total distance)/(Total Time) =
a lightning bolt strikes a tree, moving 23.36 c of charge through a potential difference of 142 mv. what energy was dissipated? 1mv
Without knowing t, we cannot calculate the current, and thus the energy dissipated.
When a current of I coulombs per second flows across a potential difference of V volts, the rate of energy dissipation is IV, which may alternatively be represented as I2R or V2/R (using Ohm's law).
The energy dissipated by a lightning bolt can be calculated using the equation P = IV,
where P is the power (energy per unit time),
I is the current, and
V is the potential difference.
Given that the lightning bolt moved 23.36 coulombs of charge through a potential difference of 142 millivolts,
we can calculate the current as follows:
I = Q / t
where t is the time it takes for the charge to flow, which is not specified.
For more questions on Energy Dissipated
https://brainly.com/question/13108225
#SPJ4
a truck drove 12 km/min for 6 min. what is the truck's distance traveled?
The truck travelled a distance of 72 kilometres in 6 minutes. To determine the distance travelled by truck, we can multiply the truck's speed by the time it travelled.
The truck's speed is given as 12 km/min, and the time is 6 minutes.
Using the formula distance = speed × time, we can calculate the distance travelled.
Plugging in the values, we get distance = 12 km/min × 6 min = 72 kilometres.
Therefore, the truck travelled a distance of 72 kilometres in 6 minutes. This means that for every minute, the truck covered a distance of 12 kilometres.
To leran more about distance, refer:-
https://brainly.com/question/13034462
#SPJ11
Acceleration is the magnitude of average velocity true or false
Answer:
False
Explanation:
A planet's moon travels in an approximately circular orbit of radius 8.6 107 m with a period of 6 h 25 min. Calculate the mass of the planet from this information.
Answer:
m v^2 / R = G M m / R^2 gravitational attraction = centripetal force
M = v^2 R / G solving for M
period = 6 h 25 min = (6 * 3600 + 25 * 60) sec = 23,100 sec = T
v = 2 pi R / T
M = 4 pi^2 R^3 / (G T^2)
M = 39.5 * (8.6E7)^3 / (6.67E-11 * 2.31E4^2)
M = 39.5 * 636 / (6.67 * 5.34) * 10^24
M = 7.05 * 10^26 kg