Light microscopes use glass or plastic lenses to magnify specimens, consisting of an objective lens and an eyepiece. They can magnify up to 2000 times, but the resulting image is upside-down and reversed. Staining may be required for transparent cell components, although this often kills the cells.
Explanation:The lenses found in a light microscope are typically made of glass or plastic and are designed to focus light on the specimen to produce an image. The most basic type is the compound microscope which consists of two main types of glass lenses: the objective lens and the eyepiece or ocular lens. The objective lens, which is near the specimen, often has a range of magnification powers from 5x to 100x. These objective lenses are usually parfocal, meaning they are set up so that the sample remains in focus when the objectives are switched. The eyepiece then further magnifies this image. Together, these lenses allow for a significant magnification of the specimen, causing an upside-down and reversed image due to the nature of the optics involved. Light microscopes are commonly used because they are suitable for viewing living organisms, but sometimes staining is necessary to make transparent cell components visible, which usually results in the death of the cells.
It's a good idea to create your procedure so that it's written _____. A. on a computer B. after your conclusions C. with step-by-step instructions D. in a way other scientists can't understand
Answer:
C. with step-by-step instructions
Explanation:
In order to create a procedure that is well understood and easily readily one needs to draw step by step action of the event that can lead to the formation of the proper answer to the query, and help in forming a good ides and proper sentence, also one should try to avoid too many words and use a active voice and be proper explanation of the statements should be made.Which one of the following equations encompasses Boyle's Law, Charles's Law, and the relationship between pressure and temperature when the volume is constant?
A. P = F/A
B. P1V1 = P2V2
C. V1/T1 = V2/T2
D. PV = nRT
-Select ALL that apply-
Absolute zero is ___.
A. 0K
B. –40oC
C. –273oF
D. –273oC
E. the temperature at which water freezes
F. the temperature at which motion is at a minimum
One hypothesis states that plate movement results from convection currents in the a. inner core. c. lithosphere. b. asthenosphere. d. outer core.
Is true that the earth's crust is made up of many tectonic plates?
For the Doppler effect to occur ?
Which of these is true for the two poles of a magnet?
Question 1 options:
Like poles repel each other.
Unlike poles attract each other.
Like poles attract each other.Unlike poles attract each other.
Like poles attract each other.Unlike poles repel each other.
Like poles repel each other. Unlike poles repel each other.
Question 2 (1 point)
If you rubbed two balloons with a wool cloth and held them close together, what do you think would happen?
Question 2 options:
They would repel one another because they would have positive charges.
They would repel one another because they would both have a negative charge.
They would attract one another because they would both have a negative charge.
They would attract one another because they would have opposite charges.
Question 3 (1 point)
An object has
Question 1:
Answer:
Like poles repel each other. Unlike poles attract each other.
Explanation:
In a magnet their are two poles which are north pole and south pole. Like pole repel each other and unlike pole attracts each other because magnetic lines of force originate from north pole and terminate on the south pole.
Question 2:
Answer:
They would repel one another because they would both have a negative charge.
Explanation:
When balloon is rubbed with wool cloth electrons are transferred from wool to balloon. Thus, balloon acquire negative charge and wool becomes positively charged. Since, we are rubbing both balloons the charges on the surface are same. Hence they would repel one another because they would both have a negative charge.
Question 3:
This question is incompletely posted.
Train car A is at rest when it is hit by train car B. The two cars, which have the same mass, are stuck together and move off after the collision. How does the final velocity of train cars A and B after the collision compare to the initial velocity of train car B before the collision? The final velocity is double train car B’s initial velocity. The final velocity is the same as train car B’s initial velocity. The final velocity is half of train car B’s initial velocity. The final velocity is zero since train car B will stop.
Answer:
C) The final velocity is half of train B's initial velocity.
Explanation:
The law of conservation of momentum states that in an isolated system, the total momentum of the system will remain constant. In this case, the two train cars will be treated as an isolated system.
Momentum is calculated by multiplying mass and velocity. Because the initial and final momentum are equal, we know that
[tex]m_Av_A+m_Bv_B=m_fm_f[/tex]
Since train A and train B have the same mass, mF = 2mB. Also, train A's initial momentum was 0 because it was at rest. So, we have
[tex]m_Bv_B=2m_Bv_f\\v_B=2v_f[/tex]
So, we find that the final velocity is half of train B's initial velocity.
The electrician's main source of information about electrical installation rules and regulations is the
Michael is playing with two horseshoe magnets. He is trying to get them to touch, but they will not regardless of how hard he tries. Why will the magnets not come in contact?
Nanotechnology and microtechnology devices are both very tiny. However, one property of nanotechnology distinguishes it from microtechnology. What is this unique property?
((Psychology))According to Sternberg, consummate love includes:
A. attraction and low commitment.
B. intimacy, commitment, and passion.
C. passion, romance, and little responsibility.
D. passion and high commitment.
Answer:
The correct answer is B. According to Sternberg, consummate love includes intimacy, commitment, and passion.
Explanation:
The triangular love theory of the American psychologist Robert Sternberg characterizes love in an interpersonal relationship according to three different components, which are intimacy, passion and commitment:
-Intimacy, understood as those feelings within a relationship that promote the approach, the link, the connection and mainly the self-revelation. Or in other words, the affection towards another person that arises from feelings of closeness, affective bond and relationship, implies the desire to give, to receive, to share, and so on.
-Passion, as a state of intense desire for union with the other, as an expression of desires and needs, great sexual or romantic desire accompanied by psychological excitement.
-Commitment, the decision to love another person and the commitment to maintain that love. This component implies maintaining the relationship in good times and bad times
The type of mass movement where rock fragments become airborne is:
A particle moving with initial velocity of 5m/s is subjected to a uniform acceleration of -2.5 m/s2.find the displacement for next 4 second
If a television with mass 15kg is lifted to a shelf of height 1.2m how much gravitationallyl potential energy is added to the television
When applying a horizontal force of 30N, an object of mass 6 kg accelerates at 4m/s2. The force of friction on the surface must be ___ N
What type of radiation can penetrate deepest into exposed materials?
Explain why cooler stars are red and hotter stars are blue
How much heat is required to warm 1.40 l of water from 20.0 ∘c to 100.0 ∘c? (assume a density of 1.0g/ml for the water.)?
The amount of heat required to warm the water can be calculated using the formula Q = mcΔT, where Q is the heat energy, m is the mass of water, c is the specific heat capacity of water, and ΔT is the change in temperature. Therefore, the amount of heat required to warm 1.40 L of water from 20.0 °C to 100.0 °C is 468,352 J.
Explanation:The amount of heat required to warm the water can be calculated using the formula:
Q = mcΔT
Where Q is the heat energy, m is the mass of water, c is the specific heat capacity of water, and ΔT is the change in temperature.
Given that the density of water is 1.0 g/mL and the volume of water is 1.40 L, the mass of water can be calculated as:
m = density × volume = 1.0 g/mL × 1.40 L × 1000 mL/L = 1400 g
The change in temperature is 100.0 °C - 20.0 °C = 80.0 °C.
Substituting the values into the formula:
Q = (1400 g)(4.184 J/g °C)(80.0 °C) = 468,352 J.
Therefore, the amount of heat required to warm 1.40 L of water from 20.0 °C to 100.0 °C is 468,352 J.
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Which of the following helps explain why the planets remain in motion around the sun?
A. density
B. gravity
C. inertia
D. both gravity and inertia
A plane traveling at a constant speed is able to travel 600 miles in 5 hours. how fast was the plane flying?
8. A thin slice of silicon that contains many solid-state components is a(n)
A) Transistor
B) Intergratef circuit
C) Diode
D) Cathode-ray tube
9. A current of 6.0 amps passed through a motor that has a resistance of 5.0 ohms. Clacukate the power
A) 30 watts
B) 150 watts
C) 180 watts
D) 900 watts
If you have the answers to the Electricity and Magnetism Unit Test I'd really appreciate all of them, I have less than an hour to finish this, yikes.
Final answer:
Answer to Question 8 is B) Integrated circuit. Answer to Question 9 is C) 180 watts, calculated using the power formula P = IV where I is current and V is voltage determined by Ohm's law.
Explanation:
Solution for Question 8:
A thin slice of silicon that contains many solid-state components and is referred to in the question is known as a(n) Integrated Circuit (IC). This is because an integrated circuit consists of numerous semiconductor devices like transistors, diodes, and resistors that are fabricated onto a single piece of semiconductor material, typically silicon. Therefore, the correct answer is B) Integrated circuit.
Solution for Question 9:
To calculate the power consumed by a motor when a current of 6.0 amps passes through it and it has a resistance of 5.0 ohms, we use the formula for electrical power, P = IV (Power = Current × Voltage). Since we know the current (I) and the resistance (R), we first need to find the voltage (V) using Ohm's law, V = IR (Voltage = Current × Resistance). Plugging in the values, we get V = 6.0 A × 5.0 Ω = 30.0 V. Now we can calculate the power, P = 6.0 A × 30.0 V = 180 watts. Thus, the correct answer is C) 180 watts.
An object dropped will hit the ground before an object that is thrown horizontally. true or false?
The correct answer is false.
Hope this helps! ;)
A current of 1.8 A delivers 2.5 C of charge. How much time was required?
A.0.70 S
B.0.72 S
C.1.4 S
D..5 S
Answer: C
Explanation:
What linear speed must an earth satellite have to be in a circular orbit at an altitude of 159 km?
What is the magnitude of the instantaneous velocity at 4.00 s?
The required magnitude of the instantaneous velocity at t = 4.00 s is 2 m/s.
What is velocity?Velocity is defined as the rate of change in the position of an object with respect to time.
The displacement function of an object s(t) gives the position of the object at time t. To find the instantaneous velocity at a particular time t, we need to find the derivative of the displacement function with respect to time.
In this case, the displacement function is s(t) = 2t + 4. Taking the derivative with respect to time, we get,
v(t) = ds/dt = 2
This means that the instantaneous velocity of the object is constant and equal to 2 m/s at all times. Therefore, the magnitude of the instantaneous velocity at t = 4.00 s is 2 m/s.
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Complete question-
What is the measure of the magnitude of the instantaneous velocity at 4.00 s where displacement is a function of t, s = 2t + 4?
You throw a water balloon straight up with a velocity of 12 m/s. What is its maximum height?
Can anyone please help me with answering this question? : An accelerating (speeding up) body has a Net Force acting in the direction of motion. True or False? Why?
The answer and how to do it
A toy helicopter begins flying across a field with a speed of 3 m/s and an acceleration of 0.8 m/s2. How long does it take the helicopter to reach a speed of 7 m/s?