Answer:
Becase he pushed the little kid not himself
Explanation:
The process of cytokinesis is different in plant and animal cells. What structure is needed for a plant cell to go through cytokinesis?
Answer:
Cytokinesis occurs differently in animal and plant cells. In animal cells, the plasma membrane of the parent cell pinches inward along the cell's equator until two daughter cells form. In plant cells, a cell plate forms along the equator of the parent cell.
Explanation:
What is the frequency of a mechanical wave that has a velocity of 1.70 m/s and a wavelength of 12.05 m? (3 decimal places)
Answer:
0.141Hz
Explanation:
Given parameters:
Velocity of the wave = 1.7m/s
Wavelength = 12.05m
Unknown:
Frequency of the wave = ?
Solution;
To solve this problem, we use the wave velocity equation which is expressed below;
V = F ∧
V is the velocity
F is the frequency
∧ is the wavelength
Now insert the parameters and solve;
1.7 = F x 12.05
F = 0.141Hz
A truck travels to and from a stone quarry that is located 2.5 km to the east. What is the total distance traveled by the truck? .00025____________________ What is its displacement? .00025
Answer:
5 km
0
Explanation:
The question says the truck travelled to and fro from the stone quarry.
When going to the stone quarry, the distance was 2.5 km to the east.
On returning, the distance back is also 2.5km
Therefore total distance travelled is 2.5km + 2.5km
= 5km
The displacement 8s dependent on what is the initial and also the final position. The initial and the final position are one and the same thing. Because the truck starts and goes back to the same position, the displacement is zero.
A student pushes a 12 kg block on a frictionless horizontal surface if the block is initially at rest what is the speed of the block after the student pushes the block for five seconds with an acceleration of 2 m/s squared
Answer:
20N
Explanation:
Given parameters:
Mass of the block = 4kg
Acceleration = 5m/s²
The speed of the block after the student pushes it is 10m/s.
Given the data in the question;
Mass of block; [tex]m = 12kg[/tex]Since the block is initially at rest,
Initial velocity; [tex]u = 0[/tex]Time taken; [tex]t = 5s[/tex]Acceleration; [tex]a = 2m/s^2[/tex]Final velocity; [tex]v =\ ?[/tex]
To determine the final velocity; we use the First Equation of Motion:[tex]v = u + at[/tex]
Where v is final velocity, u is initial velocity, a is acceleration and t is time taken.
We substitute our values into the equation
[tex]v = 0 + [ 2m/s^2\ *\ 5s]\\\\v = 2m/s^2\ *\ 5s\\\\v = 10\frac{ms}{s^2}\\\\v = 10m/s[/tex]
Therefore, the speed of the block after the student pushes it is 10m/s.
Learn more: https://brainly.com/question/10477202
ill give brainlist help pleaseee asap
Answer:
20. This is a transverse wave.
21. a is a Crest
b is the wavelength
c is the amplitude
d is the trough
e isthe amplitude
f is the wavelength
g is time
Explanation:
A boy is pushing a box on the ground to the right. What four forces is he using?
Answer: He is usining
Gravity,Drag, Tension, Direction
Explanation: please give me brainliest
why does a Ray of light passing through a glass slab not shown dispersion?
Answer:
After refraction at two parallel faces of a glass slab, a ray of light emerges in a direction parallel to the direction of incidence of white light on the slab. As rays of all colours emerge in the same direction (of incidence of white light), hence there is no dispersion, but only lateral displacement.
If an Isotope has a Half-life of minutes. How many Half-life's have occurred after 24 minutes?
Answer:12
Explanation:
If a transverse wave has a velocity of 27.9 meters per
second and a wavelength of 200 meters, what is the waves
frequency?
Answer:
0.14Hz
Explanation:
Given parameters:
Velocity = 27.9m/s
Wavelength = 200m
Unknown:
Frequency of the waves = ?
Solution:
To solve this problem, we use the wave - velocity equation:
V = F ∧
V is the velocity
F is the frequency
∧ is the wavelength
Now, let us insert the parameters and solve;
So;
27. 9 = F x 200
F = 0.14Hz
A toy plane with a mass of 20 kg is flying at 10 m/s. What is its kinetic energy?
A. 1 000 J
B. 200 J
C.2 000 J
D. Cannot be determined
Explain in detail how educational institutions and personal ideology affect the influence of contemporary psychological
perspectives.
Answer:
Educational institutions can influence what psychological perspectives are taught, studied, and researched. Take, for example, behaviorism. Before the cognitive perspective re-emerged, behaviorism was the dominant perspective being taught in most universities. Personal ideology can also affect which perspective a psychologist supports, the course of research a psychologist undertakes, and also a psychologist's perception and interpretation of research findings. For example, during the dominance of behaviorism, psychologists were discouraged from studying cognitive processes. As a result, much of the research conducted had a behaviorist slant to it.
Explanation:
whats ur funniest thing u have ever done in ur life mine was me sending a picture of me and my friend at the beach to my principle
A car can accelerate from rest to 28 m/s and travels 280meters. How long does this acceleration take?
Answer:
[tex]a=1.4m/s^2[/tex]
Explanation:
From the question we are told that
Velocity v=28m/s
Distance d=280
Generally the Newtons equation for motion is mathematically given as
Acceleration
[tex]v^2=2as[/tex]
[tex]a=\frac{V^2}{2s}[/tex]
[tex]a=\frac{28^2}{2*280}[/tex]
[tex]a=1.4m/s^2[/tex]
Question 11 of 11
Which model best describes how gravity causes star formation?
A. A long spool of thread is unwound and then wound back up.
B. Two mugs crash into each other and break into many small
pieces.
C. A cup of water is dumped on the ground, where it forms a small
pool.
D. A snowball grows as more snow sticks to it.
Answer:
d
Explanation:
Answer:
D. A snowball grows as more snow sticks to it.
Explanation:
When a star is born, it’s fairly small. However, the stars gravitational pull brings more things (for lack of better term) into it therefore increases it’s size as a snowball would as more things (again, no better term) stick to it.
Hope this helps, it was a pleasure to make your acquaintance.
GIVING BRAINLIEST FIVE STARS AND HEART!
Hello help me please! (*18* Points!) How can the potential energy of a bicycle stopped at the top of a hill be changed into kinetic energy?
Answer:
A bicycle on the top of the hill has the highest potential energy, and when the bike goes down, it transfers to kinetic because it is moving
Explanation:
yeah
On a distant planet, the GPE of a 65 kg astronaut is 11,115 j when they are on a 46 m tall cliff. What is the acceleration due to gravity on this planet
Answer:Learn what gravitational potential energy means and how to calculate it. ... a pulley and rope, so the force due to lifting the box and the force due to gravity, ... would be used by an elevator lifting a 75 kg person through a height of 50 m if the ... When you are close to a planet you are effectively bound to the planet by gravity ..
Explanation:
What is the main idea of the paragraph in one sentence?
Answer:
The main idea is hoemany thing can turn into amazing and great things
Explanation:
Answer:
The main idea for this passage us to tell you about and space ship and how fast it can go and about the physics
What is babylonian ???? pls help
Answer:
Babylonia was an ancient Akkadian-speaking state and cultural area based in central-southern Mesopotamia. A small Amorite-ruled state emerged in 1894 BCE, which contained the minor administrative town of Babylon.
Explanation:
a car has a mass of 1000kg and accelerates at 2 meters per second per second. what is the magnitude of the net force exerted on the car.
Answer:
2000N
Explanation:
Given parameters:
Mass of the car = 1000kg
Acceleration = 2m/s²
Unknown:
The net force exerted on the car = ?
Solution:
From newtons second law of motion;
F = mxa
F is the net force
m is the mass
a is the acceleration
F = 1000 x 2 = 2000N
Stephanie goes on a giraffe safari in Africa. She travels 8 km north, then 3 km west and then 2 km south.
What distance did she cover and what was her displacement
Answer:
distance =13km , displacement=3km
Explanation:
north south does not affect displacement
A student lifts a 2 kg book from the floor to a desk that is 0.5 meters high. How much work does the student do?
Answer:
W = 9.8 J
Explanation:
Given that,
Mass of the book, m = 2kg
A student lifts it from the floor to a desk that is 0.5 meters high.
We need to find work done by the student. The work done in lifting the book is given by :
W = mgh
Put all the values,
W = 2 kg × 9.8 m/s² × 0.5 m
W = 9.8 J
So, the required work done is 9.8 J.
Can something stay at one point and still be in motion? Why or Why Not?
Answer:
Yes
Explanation:
It is possible because a stone on the ground is at rest with respect to earth but at the same time earth is moving around the sun. That means everything on earth is moving so with respect to sun the stone is also moving. That is how the stone is in rest also and is in motion also.
What is the wavelength of light waves if their frequency is 5.0x1014 Hz and the speed of light 3 x
108 m/s?
A. 0.60 m
B. 6.0 mm
C. 0.060 mm
D. 0.60 um
Answer:
D. 0.60 um
Explanation:
Given the following data;
Frequency = 5.0x10^14 Hz
Speed = 3 x 10^8 m/s
To find the wavelength;
Wavelength = speed/frequency
Substituting into the equation, we have
Wavelength = 3 x 10^8/5.0x10^14
Wavelength = 6 × 10^7m
But 1 meter (m) = 1000000 micrometer (um)
6 × 10^7 meter = 0.6 micrometer.
PLZ HELP ME
Global winds are found in each convection region. Because convection cells are in a set place in the atmosphere and the Earth is spinning on its axis, the winds appear to curve.
The apparent curving of the winds is called _______.
A.
the global wind effect
B.
the Coriolis effect
C.
the Curvature effect
D.
atmospheric curving
Answer:
C. the Curvature effect
Explanation:
The Coriolis effect is the apparent curvature of global winds, ocean currents, and everything else that moves freely across the Earth's surface. The curvature is due to the rotation of the Earth on its axis
Potential difference must be measured in parallel within a circuit, using a device called a voltmeter
Answer:
This is true
Explanation:
This is true because in other To measure the potential difference that is across a circuit, we have to place the device called the voltmeter to be in parallel withe the circuit, so as to get a measurement of the difference in energy from one side of the circuit to the other side. We can also refer to the Potential difference as the voltage and it is measured in volts using a voltmeter
Is the amount of friction greater between rough surfaces or smooth surfaces? Why?
Answer:
Rough surfaces have more microscopic hills and valleys than smooth surfaces do. So, the rougher the surface is, the greater the friction is.
A ball is falling from the sky down to the left. What two forces are being used?
Answer:
push and pull
Explanation:
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Answer: Gravity for sure and...air resistance.
Explanation: I hope this is correct.
“You can’t get more energy from a machine than the amount of energy you put into it,” is one way of stating the law of conservation of _____. A. work B. friction C. energy D. power
Answer:
Energy
Explanation:
One ways of stating the law of conservation of energy is that "you cannot get more energy from a machine than the amount of energy you put into it".
The law of conservation of energy states that in a system, energy is neither created nor destroyed but transformed from one form to another.
The energy in a system does not increase based on the premise of this law.
The efficiency of a machine can reduce but the energy is always conserved. This is because energy is transformed to other forms.
True or False: TV waves have a shorter wavelength than microwave rays
Answer:
I think true..... :))))))))))
A train car of mass 16,500 kg moves along the railroad track with a constant speed of 14 m/s. What is the momentum of the car?
Explanation:
Here,
Mass=16,500kg.
speed=14 m/s.
we know that,
[tex]\tt{ p=m×v }[/tex] ⠀
where,
p=momentum
m=mass
v=velocity
according to the question,
[tex]\tt{ momentum =mass×velocity }[/tex] ⠀
[tex]\tt{ 16500×14 }[/tex] ⠀
[tex]\tt{ 231000~kg.m/s }[/tex] ⠀
so,
velocity of the car is 231000kg.m/s