Answer:
I think c is the correct answer
Answer: C
Explanation:
In close pipe resonator high pressure reflects as low pressure
1) True
2) False
Answer:
true
Explanation:
i think it is the answer
If a cactus is given more water, then it will grow taller. This is because water is important to plant health.
What does the statement above represent?
an experiment
a hypothesis
a theory
a law
Answer:
An experiment
Explanation:
I guess.....
....
.
.
Answer:
a theory
Explanation:
The boat is travelling at a constant velocity.
Which of these statements is correct for the horizontal forces acting on the boat?
the friction forces are zero
the friction forces are bigger than the forward force
the friction forces are smaller than the forward force
the friction forces are the same size as the forward force
the friction forces are smaller than the forward force
А
man of mass
77kg stands on a
Spring-weighing
Machine
inside a lift
When the lift starts to ascend, its accel-
eration 2 m/s2. what will be reading on.
the machine?
Explanation:
The reading on the scale is
W = m(g + a)
= (77 kg)(9.8 m/s^2 + 2 m/s^2)
= 908.6 N
Force F=5 N acts to the right
Answer:
Calculations involving forces
The resultant force is the single force that has the same effect as two or more forces acting together.
Two forces in the same direction
Two forces that act in the same direction produce a resultant force that is larger than either individual force.
You can easily calculate the resultant force of two forces that act in a straight line in the same direction by adding their sizes together.
Example
Two forces, 3 N and 2 N, act to the right. Calculate the resultant force.
Two arrows, one above the other, both pointing to the right, one labelled 2 N and one labelled 3 N. Then an equals sign and then another arrow to the right labelled 5 N.
Two forces acting in the same direction
Resultant force F = 3 N + 2 N = 5 N to the right.
The resultant force is 5 N to the right.
Two forces in opposite directions
Two forces that act in opposite directions produce a resultant force that is smaller than either individual force.
To find the resultant force subtract the magnitude of the smaller force from the magnitude of the larger force.
The direction of the resultant force is in the same direction as the larger force.
Example
A force of 5 N acts to the right, and a force of 3 N act to the left.
Calculate the resultant force.
Two arrows, one above the other, one pointing to the left, labelled 2 N, the other pointing to the right labelled 3 N. Then an equals sign, with an arrow to the right labelled 1 N.
Two forces acting in opposite directions
Resultant force F
Resultant force F = 5 N - 3 N = 2 N to the right.
The resultant force is 2 N to the right.
Explanation:
Thanks me later
Choose all the answers that apply.
Kinetic is calculated using _____.
1.mass
2.velocity
3.height above ground
4.gravity
I need help please and thanks
Answer:
4.Given:
m=1000kg
a=(3m/s)^2
F=m×a
=1000×3
=3000N
5.Given:
m=50kg
a=(5m/s)^2
F=m×a
=50×5
=250N
6. Given
F=250N
a=(5m/s)^2
m=?
F=m×a
250N=m×(5m/s)^2
m×(5m/s)^2=250N
m=250N÷(5m/s)^2
m=50kg
List 5/10 qualities/characteristics of what you believe a leader should have and why
Answer:
this is your choice entirely but anyways
professionalism so they don't slack off
respect so they can be respected while treating others with respect
kindness (even if only a little) so they aren't plain out rude
if they're in school, passing grades so they can be taken seriously
role model so they can teach younger people
Explanation:
Our best evidence and theoretical calculations indicate that the solar system began with a giant spinning system of gas and dust that scientists call ___________. Group of answer choices
Answer:
Solar nebula.
Explanation:
A planet can be defined as a large celestial body having sufficient mass to allow for self-gravity and make it assume a nearly circular shape (hydrostatic equilibrium), revolves in an orbit around the Sun in the solar system and has a cleared neighborhood.
Basically, the planets are divided into two (2) main categories and these includes;
1. Outer planets: these planets are beyond the asteroid belt and comprises of jupiter, saturn, uranus and neptune, from left to right of the solar system.
2. Inner planets: these planets are the closest to the sun and comprises of mercury, venus, earth and mars.
These outer planets are made mostly of gases (hydrogen and helium) causing them to be less dense than the solid inner planets. These gases are generally known to be less dense in terms of physical properties.
Some examples of the planet found in the solar system are Mars, Venus, Earth, Mercury, Neptune, Jupiter, Saturn, Uranus, Pluto, etc.
Scientists have been able to understand and discover that, gravity pulled materials (low-density cloud of interstellar gas and dust known as a nebula) together forming the planetary bodies in our solar system.
A dark nebula can be defined as an interstellar cloud that is so dense as a result of high concentration of gas and dust and as such it obscures the visible wavelengths of light from stars behind it, thus appearing completely opaque (dark patch) in front of a bright emission nebula or in regions having plenty stars.
The characteristics of a nebulae are;
I. It contain hydrogen.
II. Clouds of gas and dust
III. It is needed to create a star.
8. _________________ became the primary commercial enterprise and ______________________ were the primary means of commercial transport.
Answer:
Corporation
Trucks
Explanation:
There are various methods of commercial enterprise. There can be sole proprietor, partnership arrangement, corporation and joint ventures. It is dependent on the requirements of a person who wishes to enter the business. The primary commercial enterprise is corporation. It is regulated by the government and fund is collected from the shareholders. The primary mean of commercial transport is trucks. They are used to move raw material and finished goods from factory to the stores.
PLS ANSWER QUICK I HAVE A COUPLE MINUTES.
An object moves through space with balanced forces acting on it. Which statement
best describes the speed and direction of the object as long as the forces acting on it
remain balanced?
A. The speed and direction of the object will both change.
B. The speed and direction of the object will remain constanti
C. The speed will change, but the direction will remain constant.
D. The speed will remain constant but the direction will change
Answer:
B
Explanation:
Newton's first law of motion states that every object will continue in a state of rest or uniform motion in a straight line unless a resultant force acts on it
balanced force means resultant force is 0N
this means that the speed will not change as it uniform and the direction will not change because it will continue at the same speed in a statight line and direction
sorry man, I think it was late
hope this helps
A lamp has a current of 2.0 amperes at 6.0 volts. What is the resistance of lamp?
Answer: B 3.0
Explanation:
Sonar is a device that uses reflected sound waves to measure underwater depths. If a sonar signal has a wavelength of 59 m and the velocity of sound in water is 15,000 m/s, what is the frequency of the signal?
A. 0.0039 Hz
B. 254 Hz
C. 885,000 Hz
the frequency of the signal is
b)254hz
Please help correct answering get 20 points (physical science btw )
A roller coaster goes down a slope with a starting speed of 5 m/s then 6
seconds later at the bottom of the slope the roller coaster is moving at a
speed of 27 m/s. What is the acceleration of the roller coaster? **Round to
1 decimal place**
Answer:
Acceleration = 3.67 m/s²
Explanation:
In physics, acceleration can be defined as the rate of change of the velocity of an object with respect to time.
This simply means that, acceleration is given by the subtraction of initial velocity from the final velocity all over time.
Hence, if we subtract the initial velocity from the final velocity and divide that by the time, we can calculate an object’s acceleration.
Mathematically, acceleration is given by the equation;
[tex]Acceleration (a) = \frac{final \; velocity - initial \; velocity}{time}[/tex]
Given the following data;
Initial velocity, u = 5 m/s
Final velocity, v = 27
Time, t = 6
To find the acceleration;
Acceleration = (v - u)/t
Acceleration = (27 - 5)/6
Acceleration = 22/6
Acceleration = 3.67 m/s²
A boy is pulling his two sisters on a sled.
If one sister weigh 30.0 kg, the other
weights 40.0 kg, and the coefficient of
kinetic friction is 0.120, how much force
is required to pull the sled?
[?] N
Answer:
Explanation:
The oly way we can figure this out is if the boy is pulling the sled at a constant velocity. If not, we need a value for acceleration, and you don't have that here. If the boy is pulling the sled at a constant velocity, then the value for acceleration is 0, making this a really simple problem. I'm going with that, since there is no way to answer you otherwise. If velocity is not constant, please either repost the question or put it in the notes section under the question as it stands. If acceleration is 0, then
F - f = ma becomes
F - f = m(0) which is
F - f = 0 and
F = f which says that the applied force is the same as the frictional force. We need then to find the frictional force, which has an equation of
f = μ[tex]F_n[/tex] where normal force is the same as the weight of the 2 girls. We will find that, then:
Each girl's mass is different so the normal force/weight equation is
w = (30.0)(9.8) + (40.0)(9.8) to get
w = 290 + 390 and
w = 680. Plug that into the frictional force equation:
f = (.120)(680) so
f = 82N
A cart is uniformly decelerating from rest. The net force acting on the cart is
Answer:
i think the answer is constant
The electric potential 1.34 m from a charge is 580 V. What is the value of the charge? Include the sign, + or -. (The answer is ___ *10^-8 c. Just fill in the number, not the power.)
Answer: 8.6
Explanation:
Answer:
+8.6
Explanation:
acellus
what is deceleration?????
Have a nice day
Answer:
[tex] \deceleration) [/tex]
Explanation:
DEÇELERATIØÑ ALWAYS REFERs TØ ACCELERATION IN THE DIRECTION ØPPOSITE TO THE DIRECTION OF VILØÇÏTY .DEÇELERATIØÑ ALWAYS reduces speed .✌️ur answer hope it helps you ✌️
Can someone help me out?
Answer:
1) The car is slowing down
2) A = 40N forward & B = 25N up
Explanation:
Whenever you're dealing with forces on moving objects, it is important to look at each of the numbers and the directions they're going in.
With the racecar, we see it has four forces on it, 2,000 N up and down, 8,000 back, and 6,000 N forward. Now, each of these forces are going in their respective directions, but they are most in comparison with the force going in the opposite direction (vertical axis, horizontal axis). The two 2,000 N forces will cancel each other out since there is an equal force in both directions, causing a net force of 0 N on the vertical axis. This is because the car is most likely moving on a flat surface. As for the horizontal axis, we simply subtract 6,000 & 8,000 to get a net force of -2,000 N in the backwards direction, telling us that the car is slowing down.
As for the boxes, we see the same vertical and horizontal axes, but separated to each box. Box A has a net force of 40 N in the forward direction and Box B has a net force of 25 N in the upward direction.
1 point
1.) Alpha has a surface temperature of 6,700 K and Beta has 17,000 K.
Which star appears more blue?
Answer:
Beta 17,000K, bc warmer is more blue
An electric field has a positive test charge of 5.00 c placed on it. The force on the test charge is 6.000 N. The magnitude of the electric field at the location of the test charge is___
3.00 N/C
1.20 N/C
30.0 N/C
120 N/C
1.02 N/C
It takes 6s for a stone to fall from the top of a building to the ground calculate i.the height of the building ii.the speed of the stone just before it strikes the ground (g=10ms^-2
Answer:
fffffff
Explanation:
are u god tell me u have to tell me are u a god
They tell me I'm a god, I'm lost in the facade
Six-feet off the ground at all times, I think I'm feelin' odd
No matter what I make, they never see mistakes
Makin' so much bread, I don't care that they're just being fake
They tell me they're below me, I act like I'm above
The people blend together but I would be lost without their love
Can you heal me? Have I gained too much?
When you become untouchable, you're unable to touch
Is there a real me? Pop the champagne
It hurts me just to think and I don't do pain
Stayin' still, eyes closed
Let the world just pass me by
Pain pills, nice clothes
If I fall, I think I'll fly
Touch me, Midas
Make me part of your design
None to guide us
I feel fear for the very last time.
The emission spectrums are known for the elements below.
What elements are in the unknown sample?check all that apply
Answer: Hello your question is incomplete, I was able to find the question online but I am unable to attach it due to plagiarism rules
answer : Lithium and Potassium
Explanation:
The elements that are in the unknown sample are : Lithium and Potassium
An Emission spectrum is used to determine the composition of a material and it is distinctively different for each element that us found on the period table
A particle is accelerated uniformly from rest, so that after 10 seconds it has achieved a speed of 15 m/s. Find its acceleration.
Answer:
1.5 m/s²
Explanation:
Applying,
a = (v-u)/t ...................... Equation 1
Where a = acceleration of the particle, v = final velocity of the particle, u = Initial velocity of the particle, t = time.
From the question,
Given: u = 0 m/s (From rest), v = 15 m/s, t = 10 seconds
Substitute these values into equation 1
a = (15-0)/10
a = 15/10
a = 1.5 m/s²
What happens to the speed and frequency of a light ray when it passes from glass into water?
The speed decreases and the frequency increases.
The speed decreases and the frequency remains the same.
The speed increases and the frequency increases.
The speed increases and the frequency remains the same.
Answer:
The speed decreases and the frequency remains the same.
Explanation:
Had it for a castle learning assignment, guessed and got it correct.
The speed of a light ray decreases and its frequency remains the same when it passes from glass into water.
What is the speed of light?The speed of light, also known as the velocity of light, is a fundamental constant of nature and is one of the most well-known physical quantities. It is defined as the speed at which electromagnetic radiation (light) travels through a vacuum, which has a constant value of 299,792,458 meters per second (m/s).
This speed is considered to be the fastest that anything can travel in the universe, and it is a critical component in many physical and biological processes. The speed of light is used in a wide range of scientific and technological fields, including optics, electronics, astronomy, and quantum mechanics. It is considered to be a universal constant and does not change with time, distance, or the medium through which it travels.
Learn more about light ray, here:
https://brainly.com/question/13851007
#SPJ6
Which of the following is not an example of an abiotic component of an ecosystem
A . water
B . minerals
C . sunlight
D . bacteria
E . air
[tex]\huge{ \mathfrak{ \underline{ Answer \: \: ✓ }}}[/tex]
Which of the following is not an example of an abiotic component of an ecosystem :
A . water
B . minerals
C . sunlight
D . bacteria ✓
E . air
Bacteria is a single celled living organism.
[tex] \#TeeNForeveR[/tex]
D. bacteria is not an example of an abiotic component of an ecosystem.
What is an ecosystem?An ecosystem is a community of living organisms (biotic) interacting with each other and with their non-living (abiotic) environment in a specific area. It encompasses all the living and non-living components of a particular environment and the complex interactions among them.
Here,
Abiotic components are the non-living factors that influence the distribution and abundance of living organisms in an ecosystem. Examples of abiotic components include water, minerals, sunlight, air, and temperature. Bacteria, on the other hand, are living organisms and are considered as biotic components of an ecosystem.
Thus, D. bacteria is not an example of an abiotic component of an ecosystem.
Learn more about the ecosystem here:
https://brainly.com/question/13979184
#SPJ6
Please help!
Drag and drop the words into the correct locations
Answer:
background radiation
uniform
13700000000 years ago
help mee with the workk no link please ·ᴗ·
Explanation: It Should Be 30:60 So If You Simplify It Would Be 1:2
(I think it's The answer I don't Know)
Activity: Solve each problem involving acceleration. Be sure to show all solutions and to use the correct units. 1. While traveling along a highway a driver slows from 45 m/s to 15 m/s in 12 seconds. What is the automobile's acceleration? 2. A biker accelerates at a rate of 7 m/s2. How long will it takes the biker to reach a speed of 18 m/s?
Answer:
1. a = - 2.5 m/s²
2. t = 2.57 s
Explanation:
1.
The acceleration of the driver can be found using the first equation of motion:
[tex]v_f = v_i + at[/tex]
where,
vf = final speed = 15 m/s
vi = initial speed = 45 m/s
a = acceleration = ?
t = time = 12 s
Therefore,
[tex]15\ m/s = 45\ m/s +a(12\ s)\\\\a = \frac{15\ m/s-45\ m/s}{12\ s}[/tex]
a = - 2.5 m/s²
negative sign indicates deceleration
2.
The time taken by the biker to accelerate can be found by using the first equation of motion again:
[tex]v_f = v_i + at[/tex]
where,
vf = final speed = 18 m/s
vi = initial speed = 0 m/s
a = acceleration = 7 m/s²
t = time = ?
Therefore,
[tex]18\ m/s = 0\ m/s +(7\ m/s^2)t\\\\t = \frac{18\ m/s}{7\ m/s^2}[/tex]
t = 2.57 s