Answer:
Cell Membrane (Plasma Membrane)
Cytoplasm.
Nucleus.
Explanation:
The cytoplasm is home to many activities of the cell as it contains molecules, enzymes that are crucial in the break down of the waste. The cytoplasm also assists in metabolic activities. Cytoplasm provides shape to the cell. It fills up the cells thus enabling the organelles to remain in their position.
The plasma membrane, or the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell. And that membrane has several different functions. One is to transport nutrients into the cell and also to transport toxic substances out of the cell.
The nucleus controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes, structures that contain the hereditary information. Nucleoli are small bodies often seen within the nucleus.
A lamp draws a current of 20 A when it is connected to a 100 V source? What is the resistance of the lamp?
Explanation:
R = V / I = 100V / 20A = 5 ohms.
1
Suppose you ride a bicycle around the block, returning to your starting point.
At the end of your trip, your average velocity will be ..........
Positive
Negative
Zero
Answer:
zero
Explanation:
this is the answer
is anti-nodes and amplitude same
Explanation:
Antinodes are not the same thing as the amplitude , but they are very closely related. The amplitude is the distance from the rest position of the wave to the antinode . The antinode is just a point along the wave that has the greatest maximum velocity in the y-direction.
The amplitude of a standing wave doesn't remain the same throughout the wave. It keeps on changing as it is a function of x.
Where the amplitude is minimum is called?
The locations at which the absolute value of the amplitude is minimum are called nodes, and the locations where the absolute value of the amplitude is maximum are called antinodes.
Explanation:
Antinodes are not the same thing as the amplitude , but they are very closely related. The amplitude is the distance from the rest position of the wave to the antinode . The antinode is just a point along the wave that has the greatest maximum velocity in the y-direction .
intro urself please
A person wants to find the width of the lake by shouting and listening for the echo from the far side. If his echo returns after 2 seconds how wide is the lake? (Velocity of sound is 340 m/sec)
Answer:
The width of the lake is 340 m
Explanation:
Constant Velocity Motion
It occurs when an object travels the same distance every equal interval. For example, if it travels 5 m in one second, then 10 m in two seconds, etc., it has a constant velocity.
The speed of the sound is assumed as v=340 m/s and the person measures the time that a sound goes and comes from the edge of a lake as t=2 seconds. The distance it travels is:
d = v.t
d = 340 m/s * 2 s
d = 680 m
But that distance is twice the width of the lake, the real measured width is 680 m / 2 = 340 m
The width of the lake is 340 m
Pls help me!! Thank u sm
Answer:
D
Explanation:
calculate the pressure in SI unit when a thrust of 75kg acts on an area of 0.5m²
Answer:
Pressure will be: 1470 Pa
Explanation:
Given
m = 75kgA = 0.5m²We know that
Pressure = Force / Area
Force = mg = (75kg) (9.81 m/s²) = 735 N
Thus,
Pressure = Force / Area
= 735 / 0.5
= 1470 Pa ∵N/m² = Pa
Thus,
Pressure will be: 1470 Pa
Conclusion of experiment for determine the magnitude and direction of magnetic field of earth What we will write in our experiment about conclusion please
Answer:
The magnitude and direction of the earth's magnetic field is between the range of 0.25 to 0.65 Gauss considering the angle of the earth's north pole is eleven degrees.
Explanation:
The magnetic field or force of the earth is attributed to a dynamo effect but the electric charges are not constant. The origin of the field is believed to be from the molten metallic core and the earth's rotation.
The Force of the magnetic field is a function of the velocity or speed 'v' of the electric charges 'q' and the field itself 'B' at an angle of sin∅. That is,
F = vqBsin∅
The product of an object's mass and its velocity.
A.Momentum
B.Force
C.Velocity
D.Speed
The tubes that go from the trachea into the lungs
state Newton second law of motion
Newton 2ns law state that external forces that exert on an object is proportional to the mass and the acceleration of an object
Formula : ΣF = ma
ask me if you're confused with my answer
a car initially traveling at 5 m/s accelerates for 2 seconds at 3 m/s. how far does it travel during this time?
Answer:
x = 16 [m]
Explanation:
This problem can be solved using the following equation of kinematics.
[tex]v_{f}=v_{o}+a*t[/tex]
where:
Vf = final velocity [m/s]
Vo = initial velocity = 5 [m/s]
a = acceleration = 3 [m/s²]
t = time = 2 [s]
[tex]v_{f}=5+3*(2)\\v_{f}=11[m/s][/tex]
Now we can find the displacement using the following equation of kinematics.
[tex]v_{f}^{2} =v_{o}^{2} +2*a*x\\11^{2}=5^{2} +2*3*x\\96=6*x\\x=16[m][/tex]
the rubber covering over a wire acts as a / an ?
Answer:
Most electrical wire is covered in a rubber or plastic coating called insulation. The purpose of insulation covering the metal part of an electrical wire is to prevent accidental contact with other conductors of electricity, which might result in an unintentional electric current through those other conductors.
Explanation:
The moon has approximately 1/6th the
gravitational pull that the earth has. If something
has a mass of 60kg on Earth, what is its mass on
the moon?
Answer:
m = 60 [kg] (mass on the moon)
Explanation:
We must remember that the mass is conserved, that is, it remains the same regardless of where it is located.
The only variation is the weight, which is different from the mass. Weight is determined by means of the product of mass by gravitational acceleration.
Therefore the mass of 60 [kg] on Earth will be the same mass on the moon.
What machine changes electrical energy into light and sound energy?
battery
o lightbulb
alarm dock
apple
Answer:
light bulb
Explanation:
A roller coaster car has 600,00 J of Kinetic energy as it approaches the station to stop. The roller coaster comes to a complete stop. How much work did the brakes do in stopping the car?
Answer:
Work Done by the Brakes = - 60000 J
Negative sign indicates the opposite direction of force and displacement.
Explanation:
Assuming that frictional effects are negligible, we can say that all the work done by the brakes is used to stop the car. We can apply law of conservation of energy to this situation as follows:
Work Done by the Brakes = Change in Kinetic Energy
Work Done by the Brakes = Final Kinetic Energy - Initial Kinetic Energy
Final Kinetic Energy of the roller coaster will be 0. Because, the roller coaster will stop finally and its velocity will become zero.
Work Done by the Brakes = 0 J - 60000 J
Work Done by the Brakes = - 60000 J
Negative sign indicates the opposite direction of force and displacement.
A car is moving at 20 m/s. The driver steps on the gas pedal and accelerates the car for 4 seconds at an acceleration of 4 m/s2. How fast is the car moving after it accelerates?
Answer:
The final velocity of the car is 36 m/s.
Explanation:
Given;
initial velocity of the car, u = 20 m/s
time of the car acceleration, t = 4 s
acceleration of the car, a = 4 m/s²
the final velocity of the car is calculated as;
v = u + at
where;
v is the final velocity of the car
v = 20 + (4 x 4)
v = 36 m/s
Therefore, the final velocity of the car is 36 m/s.
1. What is the velocity of a go-kart with a mass
of 25 kg and 50 J of kinetic energy?
Answer:
Explanation:
The formula for KE is
[tex]KE=\frac{1}{2}mv^2[/tex] which makes solving our problem for velocity super easy. We will rewrite the formula in terms of v to get:
[tex]v=\sqrt{\frac{2KE}{m} }[/tex] and filling in:
[tex]v=\sqrt{\frac{2(50)}{25} }[/tex] so
v = 2 m/s to the correct number of sig fig's
A Geosynchronous orbit is one where a satellite orbits the earth with the same period of motion as the earth on its own axis.
How far from the center of the earth is the satellite's orbit?
Answer:
22236 mi
Explanation:
Two bodies of mass 10 kg each are separated by 1 metre, the force of attraction between them is
a) 6.67 x 10-N b) 6.67 x 10'N c) 6.67 x 10 N d) 6.67 x 10'Nial
99
Answer:
6.67x10^-11 N-m^2/kg^2
Explanation:
What statement about the milky way is true?
Answer:
D) it is one of many galaxies
Explanation:
the milky-way galaxy is just one of billions of galaxies, which span billions and billions of light-years across the universe!!!
Answer:
D it is one of many
Explanation:
Un bloque de 25 n se encuentra suspendido por un hilo al techo vitamina la tensión que aparece en el hilo
Answer:
T = 25 N
Explanation:
The question says that "A 25 n block is suspended by a wire from the ceiling vitamin the tension that appears in the wire ?"
Weight of the block, W = 25 N
Weight of a body acts in downward direction and tension acts in upward direction. It would mean that,
Tension = weight of the block
T = mg
T = 25 N
Hence, the tension in the wire is 25 N.
Calculate the momentum of a 78 kg cheetah running at 24 m/s.
Answer:
1872 kg.m/sExplanation:
The momentum of an object can be found by using the formula
momentum = mass × velocity
From the question we have
momentum = 78 × 24
We have the final answer as
1872 kg.m/sHope this helps you
What would happen if the gravitational force between the moon suddenly disappeared?
A object with a mass of 1.5 kg is lifted from the ground to a height of 0.22 m what is the objects potential energy
Answer:
3.3 JExplanation:
The potential energy of a body can be found by using the formula
PE = mgh
where
m is the mass
h is the height
g is the acceleration due to gravity which is 10 m/s²
From the question we have
PE = 1.5 × 10 × 0.22
We have the final answer as
3.3 JHope this helps you
No one falls out during a loop on a
rollercoaster because of _____.
Answer:
Seatbelts
Explanation:
Resistance to change in motion. it presses tour body outside of the loop, keeping you inside the cart
Find the mass of an object the accelerates at 3.4 m/s2 when a net force of 25.1 N force is applied to it. Answer in units of kg and include all necessary work.
Help Please
Given,
Acceleration of the object = 3.4 m/s²Net force = 25.1 NWe need to find,
Mass of the body = ?Using Newton's first law of motion .
Force = Mass × Acceleration➵ 25.1 = Mass × 3.4
➵ 25.1 ÷ 3.4 = Mass
➵ Mass = 7.38 kg
What is the relationship between the speed of impact and the dropping height?
SHOW ME YOUR SMARTS FOR BRAINLIEST
Why is the value of a substance’s specific gravity always the same numerically as its density?
Because it is always the substance’s density divided by the density of water which is 1 g/cm 3
Because it is always the substance’s density multiplied by the density of water which is 1 g/cm 3
Because specific gravity is the inverse of density
Because these represent the same measurement
Answer:
Because it is always the substance’s density divided by the density of water which is 1 g/cm 3
Explanation:
The density of water is 1g/cm³;
Specific gravity = [tex]\frac{density of substance}{density of water}[/tex]
Since specific gravity is a relative comparison of a substance density with that of water, the values always the same.
Density of water is 1 and it will have no effect on the density of the substance.
The only difference is in the units. The density of a substance will have a unit but that of the specific gravity will have no unit.
Numerically, dividing by 1 has no implication.
Answer: the answer is C
Explanation:Specific gravity is the density of a substance divided by the density of water. Since (at standard temperature and pressure) water has a density of 1 gram/cm3, and since all of the units cancel, specific gravity is usually very close to the same value as density
A feather is falling towards the ground at a constant speed. Of the forces listed, identify which act upon the feather.
Answer:
Gravitational force
Explanation:
Gravitational force is what is making the feather go down. It's pushing the feather down, without the Gravitational force, the feather would have been going up, and not down. Just like us. Gravitational force is what keeps us humans from floating ( unless ur an alien jklol), So yeah Gravitational force is the force that acts upon the feather to fall towards the ground at a constant speed.
Btw, u never listed the forces here just ....
Hope this helped!
A feather is falling towards the ground at a constant speed. Forces act upon the feather is gravitational force.
What is force?
A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.
When body is falling the net acceleration that objects get as a result of the combined action of gravity and centrifugal force is known as the Earth's gravity, or g. It is a vector quantity
A feather is falling towards the ground at a constant speed. Forces act upon the feather is gravitational force.
To learn more about force refer to the link:
brainly.com/question/13191643
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Which of the following is the most important factor in determining an element’s place in the periodic table?
A. Number of protons
B. Number of neutrons
C. Atomic Charge
D. Atomic Density
