C.) Year
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Answer:
I believe it's C. Year.
Explanation:
Hope this helps! ^^
How are reversibility, time, and entropy connected
Answer:
As one goes "forward" in time, the second law of thermodynamics says, the entropy of an isolated system can increase, but not decrease. ... Thus, entropy measurement is a way of distinguishing the past from the future.
Explanation:
Please help!!!
What do all of the inventors discussed in this lesson have in common?
All of the inventors can be characterized as problem-solvers.
O All of the inventors created new things as children.
All of the inventors used engineering principles to create new things.
O All of the inventors needed mathematics principles to formulate solutions.
Answer:
All of the inventors can be characterized as problem-solvers.
Explanation:
Took the practice
Answer:
All of the inventors can be characterized as problem-solvers.
Explanation:
A car accelerates from 20.0 m/s to 28.0 m/s over a distance of 50.0 m. What is the car’s acceleration?
Answer:
Explanation:
[tex]V^2=V^2_o+2a(x_f-x_i)[/tex]
[tex]28^2=20^2+2a(50)\\784=400+100a\\384=100a\\a=3.84m/s^2[/tex]
How long will it take a rocket traveling at 8km/s to reach 20 km?
Answer:
2.5 seconds
Explanation:
20:8= 2.5 seconds
have a nice day! (^o^)
Answer:
2.5 seconds
Explanation:
20 ÷ 8 = 2.5
That's it.
1) Li + ČI>LICI
How many atoms are in this?
Answer:
2 atoms
Explanation:
You drop a rock down a well that is 31 m deep. How long does it take the rock
to hit the bottom of the well?
A. 1.9 s
B. 2.7 s
C. 6.3 s
D. 2.5 s
prove that total mechanical energy is always constant
Explanation:
We know that the overall mechanical energy of a device stabilizes in the absence of any external force. We know that that the total of potential and kinetic of the freely velocity vector remains same. ,So mechanical energy of a body, underneath gravitation, remains constant.
PLEASE HELP I'LL MARK BRAINLIEST
Answer:
B
Explanation:
Which of the following objects have gravitational potential energy?
A) a diver standing on a diving platform.
B) A hockey puck gliding across the ice.
C) an archers bow that is drawn back.
D) A runner waiting on the starting blocks.
Answer:
An archers bow that is drawn back
Answer:
A)a diver standing on a diving platform.
REQUESTS/REQUIERMENTS:
BRAINLIEST PLEASE
Some one plz help me and I will give you brainliest plz
Which is considered a dark green vegetable?
A.
Carrots
B.
Broccoli
C.
Squash
D.
Green peas
Answer:
Broccoli
Explanation:
Answer:
b. broccoli
Explanation:
took the quiz
hope this helps
what are food sorces of iron
Answer:
liver (but avoid this during pregnancy)
red meat.
beans, such as red kidney beans, edamame beans and chickpeas.
nuts.
dried fruit – such as dried apricots.
fortified breakfast cereals.
soy bean flour.
Explanation:
is 468km per minute describing speed or velocity
A car drives in a circle at 56 km/hr. Which of
the following accurately describes the
motion of the car? The car's -
speed and velocity are both constant.
velocity is constant but speed is changing.
speed is constant but velocity is changing.
speed and velocity are both changing.
Answer:
Speed is constant but velocity is changing
Explanation:
Speed is a scalar quantity, meaning magnitude only. Velocity is a vector quantity, meaning magnitude and direction. If you're moving in a circle at a constant speed, the speed is constant but the direction is constantly changing. Therefore, the speed is constant but velocity changes.
[WASSCE June 2008 Qu 11]
[
A force of 20 N acts at an angle of 30° to the
horizontal. Determine the vertical component
of the force.
A. 17.30 N
B. 11.50 N
C. 10.00 N
D. 7.50 N
[WASSCE Nov 2008 Qu 11
α=30°
F=20 N
Fh=F*cos(α)
Fv=F*cos(90-α)=F*sin(α) (vertical component of the force F)
Fv=20*0,5=10.00 N
Answer (C)
Explain What the core muscles do and why it's important to have a strong set of core muscles.
Answer: Core muscles protect the spine and keeps it stabilized. Also they can help control movements such as walking and standing. The core helps transfer energy and help us move in different directions. It's important to have a strong set of core muscles.
Explanation:
Answer:
The core muscles stabilize and protect the spine. They help control all movements and make it possible for us humans to walk and stand up right. The core helps us transfer energy, shift our body weight and reach/move in different directions. It is important to have a strong set of core muscles because it makes everyday activities easier.
Explanation:
Plz help me plzzz. I'm begging you
Answer:
a then c then b
Explanation:
what is the magnitude of velocity for a 1500 kg car possessing 4500 kgm/s of momentum?
what is refractive index ?
Explanation:
Refractive Index is a value calculated from the ratio of the speed of light in a vacuum to that in a second medium of greater density. The refractive index variable is most commonly symbolized by the letter ‘n’ or n’ in a descriptive text and mathematical equations.
An object accelerates at 8 m/s^2 when a force of 40 Newtons is
applied to it. What is the mass of the object? (Use formula: m=Fla)
Answer:
5 kg
Explanation:
Acceleration = 8 m/s^2
Force = 40 N
Force = mass * acceleration
mass = force / acceleration
mass = 40 / 8
mass = 5 kg
what are the standard units of displacement?
A force of 900 N pushes a wedge 0.10 m into a log. If the work done on the log is 50 J, what is the efficiency of the wedge?
Answer:
I'm fairly certain it's 1,800
Explanation:
The efficiency of the wedge with force F=900 N displaces the wedge 0.10 m is 55.55% or 56%.
What is the efficiency of the machine?The efficiency of the machine equals the ratio of output energy and input energy. It is also defined as the ratio of work done on a load by the machine to the work done on the effort by the machine.
A load is defined as the weight lifted by the machine. The effort is defined as the force applied to bring the desired change in the load. Work done is defined as the product of force and displacement.
The efficiency, η = Output power / Input power, and the highest efficiency of the machine is equal to one. The efficiency of the machine has no unit. The efficiency η = (Actual work done / Ideal work done) × 100.
From the given,
Force = 900 N
Displacement = 0.1 m
Work done = F × s = 900×0.1 = 90 J
Actual work done = 50 J
Efficiency,η = (50/90) × 100
η = 55.55 %
Thus, the efficiency of the wedge is 55.56%.
To learn more about the Efficiency of a machine:
https://brainly.com/question/11752408
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Please help!! This is due today!!
A shopping bag can provide a force of 65 N before breaking. A shopper puts 5 kg of groceries in the bag. If the shopper tries to lift the bag with an upward acceleration of 2 m/s/s, will the bag break?
Sodium and phosphorus combine to form Na3P. What is the name of this compound? phosphorus sodiate phosphorus sodide sodium phosphate sodium phosphide
Answer:
Sodium phosphide
Explanation:
Answer:
sodium phosphide
Explanation:
i just took the test. Good luck!! Have a great day!!
loop od death cause and effect
Answer:true
Explanation:
Which metric prefix has a decimal form of 0.01?
Answer:
Centi is the metric prefix for 0.01
A projectile is shot horizontally from the edge of a cliff, 400 m above the ground. The projectile is traveling horizontally at 65 m/s the moment it leaves the cannon.
What is the initial vertical velocity of the projectile?
Determine the time taken by the projectile to hit the ground.
How far does the projectile land from the base of cliff?
Find the vertical component of the velocity just before the projectile hits the ground.
What is the magnitude of the final vector velocity the instant before it hits the ground?
What is the direction of the final vector velocity the instant before it hits the ground?
Answer:
a) [tex]v_{oy}[/tex] = 0, b) t = 9.035 s, c) x = 587.275 m, d) v_y = -88.54 m / s,
e) v = 109.84 m / s, f) θ = -53.7º
Explanation:
This exercise is a projectile launch
a) as the projectile is launched horizontally, its initial vertical velocity is zero
[tex]v_{oy}[/tex] = 0
b) let's use the relation
y = y₀ + v_{oy} t - ½ g t²
when reaching the ground y = 0 and the initial vertical velocity is v_{oy}=0
0 = y₀ + 0 - ½ g t²
t = [tex]\sqrt{ \frac{2 v_o}{g} }[/tex]
t = [tex]\sqrt{ \frac{ 2 \ 400 }{ 9.8} }[/tex]
t = 9.035 s
c) the horizontal distance is
x = v₀ₓ t
x = 65 9.035
x = 587.275 m
d) the vertical speed when touching the ground
v_y = [tex]v_{oy}[/tex] -gt
v_y = 0 - 9.8 9.035
v_y = -88.54 m / s
the negative sign indicates that the velocity is directed downwards
e) the velocity at this point
v = [tex]\sqrt{ v_x^2 + v_y^2}[/tex]
v = [tex]\sqrt{65^2 + 88.54^2}[/tex]
v = 109.84 m / s
f) the direction of the velocity
let's use trigonometry
tan θ = v_y / vₓ
θ = tan⁻¹1 v_y / vₓ
θ = tan⁻¹ (-88.54 / 65)
θ = -53.7º
this angle is measured clockwise
HELP NEEDED ASAP GIVING BRAINLIEST!!
View the video clip below and answer the question.
The video clip above illustrates the process of __________
Exploding planet or astroifd
The net force acting on this object is 200N to the left. What is the force of friction and air resistance combined if the thrust force is 500N?
Answer:
Explanation:
Force of friction and air resistance acts against the external force . Let it be f .
net force = external force - frictional force and air resistance
Putting the given values
200 = 500 - f
f = 500 - 200 = 300 N .
Hence force of friction = 300 N .
Can y’all help me pleaseeee