4,347 Answered Questions for the topic Science

Science Biology Genetics

12/12/23

what is the difference between RT-PCR and PCR?

in terms of things like monitoring gene editing, what are the benefits of using one over the other? how is rt-pcr more beneficial than regular pcr?
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Science Math Chemistry

11/27/23

What is the copper mass ?
A Block of copper has an initial temperature of 65.4C it’s immersed in a beaker containing 95.7 g of H2O. At 22.7C .Once the heat transfer is complete the temperature and block measures 24.2 C.... more
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11/26/23

Parallel Wires Question Physics
Two long, parallel wires separated by 2.50 cm carry in opposite directions. The current in on wire is 1.25 A, and the current in the other is 3.50 A. (a) Find the magnitude of the force per unit... more
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11/26/23

Magnetic field question
The magnetic field 40.0 cm away from a long, straight wire carrying current 2.00 A is 1.00 μT. (a) At what distance is it 0.100 μT? (b) at one instant, the two conductors in a long household... more
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11/26/23

Directionality Physics 2 Question
A long, straight wire lies on a horizontal table in the xy-plane and carries a current of 1.20 μA in the positive x-direction along the x-axis. A proton is traveling in the negative x-direction at... more
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Science Chemistry

11/25/23

Rate previous lesson on tutoring
Hi,I forgot to rate many lessons (over 14 days old) with tutor Thuan N. How can I go back to rate him?Please advice,Mai
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11/15/23

Resistor and Capacitor Arrangements
Three capacitors are connected as shown in the figure. What is the equivalent capacitance between points A and B? Please explain the steps leading to your answer.If you were to swap all capacitors... more
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Science Physics

11/14/23

Heat Transfer│Please Help!
49 g of an unknown metal is heated to a temperature of 150.0 C. A calorimeter is filled with 120.0 g of water at an initial temperature of 20.0 C. The specific heat capacity of water is 4.184... more
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Science Physics

11/14/23

Heat Capacity│Please Help!
A substance at a starting temperature of 375 K is cooled to 196 K. Select ALL of the statements below that must be true.a. ΔT is positiveb. ΔT is negativec. Q is positived. Q is negativee. specific... more
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Science

11/13/23

Mechanical weathering changes the size of a rock
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11/08/23

Electric Potential and Energy Storage

The plates of a certain parallel-plate capacitor have been set with a separation of d = 4.15 mm, and each has an area of A = 50 cm2. After charging the capacitor, each plate carries a full charge... more
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Science

11/06/23

Do cells have DNA.
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11/05/23

With evolution, how did ectotherms evolve into endotherms?
Like how did they completely change like eg (this is a bad example) a fish to a rat? I understand that there are multiple stages between each animal but how does that work? And also this second... more
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Science Physics

10/28/23

Mechanical Equilibrium; How set this up?
A beam that is 5.0 m long has a weight of 80 N. It is supported at each end by a wooden post. On top of the beam is half of an identical beam, as shown in the diagram. The magnitude of the force... more
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Science Math Physics

10/18/23

Vector Problems - Projectile Motion (finding vertical velocity)
A soccer ball leaves the ground at an angle of 12.5° with an initial horizontal velocity of 38.17m/s. What is the initial vertical velocity?
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Science Chemistry

10/15/23

A 165.0 ml solution of 2.724M strontium nitrate is mixed with 215.0ml of a 3.120M sodium fluoride solution. Calculate the mass of the resulting strontium fluoride precipitate.
Assuming the complete precipitation, calculate the final concentration pf each ion. If the ion is no longer in solution, enter a 0 for the concentration.
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Science Chemistry

10/15/23

A 165.0 ml solution of 2.724M strontium nitrate is mixed with 215.0ml of a 3.120M sodium fluoride solution. Calculate the mass of the resulting strontium fluoride precipitate.
Assuming the complete precipitation, calculate the final concentration pf each ion. If the ion is no longer in solution, enter a 0 for the concentration.
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09/21/23

true or false question
For a chronic disease, if the incidence declines but the number of deaths increases, the prevalence will also greatly increase(True or False)?
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Science

09/12/23

what if my grade is 91 in one of my class and one of my assignments i got a d what will be my over all grade
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Science

09/05/23

What are the different types of erosional processes?
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09/03/23

How do I prepare for a science presentation?
I have an assignment that requires that I give a presentation on a chosen scientific topic. Where do I start? How long should the presentation be? I have searched my chosen topic and I am confused... more
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Science Math Computer

08/27/23

Using a Samsung Tablet
Hello! I was wondering if anyone has experience in utilizing a Samsung tablet, specifically Samsung Notes, in their lessons. Is there a way to show the tutor in real time what I'm writing? Is the... more
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Science

08/24/23

Is there a connection to aromas/scents that can effect a cat's mood?
Can scents/aromas contribute to a cat's mood such as making them feel less anxious, less depressed even more confident? Is it safe to say a cat's sense of smell controls its happiness?
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Science Biology

08/24/23

The education program at the New Jersey grant

Predict what percentage of the earth’s surface is covered with water. __________ % (0% – 100%) To find out how close your prediction is, count the number of squares of land and water down each... more
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08/20/23

LoanMan C U S T O M E R Care NuMbeR 7806049131//7-6-6-0-8-4-1-0-0-9 All

LoanMan C U S T O M E R Care NuMbeR 7806049131//7-6-6-0-8-4-1-0-0-9 All RELATED ENQUIRY TOLL FREE NUMBER All SERVICES[❼➇ʘ➅Ѳ４９１➂❶]
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