1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
KiRa [710]
3 years ago
6

Diana would like to observe the movements of a paramecium. Which of the following tools would be best for Diana to use? A. hand

lens B. light microscope C. scanning electron microscope D. convex telescope
Physics
2 answers:
ra1l [238]3 years ago
8 0
Out of the choices given, the tool that would be best for Diana to use is the light microscope. The correct answer is B.
Ksivusya [100]3 years ago
5 0

Answer:

Option (B) is correct.

Explanation:

A light microscope is a device which is used to the highly magnified images of very tiny objects.

It consists of two convex lenses.

One is of short foal length called objective lens and the other is of large focal length called eyepiece.

They held co axially at the ends of a tube whose length is adjusted.

The final image formed is highly magnified, real and inverted image with respect to the object.

You might be interested in
Please help on this one? PLEASE.
Fantom [35]

Answer: The answer is D

Explanation:

6 0
3 years ago
A toroid having a square cross section, 5.00 cm on a side, and an inner radius of 15.0 cm has 500 turns and carries a current of
SCORPION-xisa [38]

Answer:

a).β=0.53x10^{-3} T

a).β=0.40 x10^{-4} T

Explanation:

The magnetic field at distance 'r' from the center of toroid is given by:

\beta =\frac{u_{o}*I*N}{2\pi*r}

a).

N=500\\I=0.800A\\r=15cm*\frac{1m}{100cm}=0.15m\\u_{o}=4\pi x10^{-7}\frac{T*m}{A}  \\\beta=\frac{4\pi x10^{-7}\frac{T*m}{A}*0.8A*500}{2\pi*0.15m} \\\beta=0.53x10^{-3}T

b).

The distance is the radius add the cross section so:

r_{1}=15cm+5cm\\r_{1}=20cm

r_{1} =20cm*\frac{1m}{100cm}=0.20m

\beta =\frac{u_{o}*I*N}{2\pi*r1}

\beta =\frac{4\pi x10^{-7}*0.80A*500 }{2\pi*0.20m} \\\beta=0.4x10^{-3} T

3 0
3 years ago
One of the key disadvantages of buying fitness equipment is __________. A. privacy B. flexibility C. maintenance D. choice Pleas
Alex Ar [27]

Answer:

<h2>C. maintenance </h2>

Explanation:

I personally believe one key disadvantages is the cost of maintaining the equipment unlike the gym where you have to subscribe for the month or the year and forget about anything, owning the gym equipment comes with the extra cost and responsibilities of maintenance to the owners.

5 0
3 years ago
What is the mass of a bird if it has a potential energy of 147J when flying at a height of 30 m above the ground?
Artist 52 [7]

Answer:

0.5kg

Explanation:

Given parameters:

Potential energy = 147J

Height  = 30m

Unknown:

Mass of the bird  = ?

Solution:

Potential energy is the energy due to the position of a body. Now, the expression for finding the potential energy is given as;

      P.E  = mgH

m is the mass

g is the acceleration due to gravity = 9.8m/s²

H is the height

      147  = m x 9.8 x 30

         m = 0.5kg

5 0
3 years ago
A skydiver is falling at constant velocity. If a force of 600 N is pulling down on the skydiver, how much force must be acting u
skelet666 [1.2K]

Well, if the skydiver is at constant velocity, than there’s no acceleration, as stated by Newton’s first law. Thus the total net force would equate to 0. In order to make this statement true, the answer would have to be exactly 600 N.

7 0
3 years ago
Read 2 more answers
Other questions:
  • Antiballistic missiles (ABMs) are designed to have very large accelerations so that they may intercept fast-moving incoming miss
    14·1 answer
  • A person hits a tennis ball with a mass of 0.058 kg against a wall.
    5·1 answer
  • A boat travels with a velocity equal to 14.0 meters per second, east in 6.15 seconds. What distance in meters does the boat trav
    12·1 answer
  • Physics includes the study of using radio waves to explore stars and identify other planets.
    7·2 answers
  • A sport car moving at constant speed travels 110m in 5.0 s. if it then brakes and comes to a stop in 4.0 s, what is the magnitud
    6·1 answer
  • 3.) If Lebron James has a vertical leap of +1.35 m. then what is his takeoff speed7 For this
    14·2 answers
  • I NEED HELP ASAP!!!!!!!!!!!!!!!!
    12·2 answers
  • How can i solve this​
    11·1 answer
  • Please help 100 points if right and if its not an awnser then will be reported and deleted
    15·2 answers
  • A CIRCULAR COIL OF 20 TURNS OF RADIUS 10.0 cm IS PERPENDICULAR TO A 0.30 tesla MAGNETIC FIELD. HOW MUCH INDUCED emf IS CREATED W
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!