You have two pieces of wire that allows electrons to pass through them when they are connected to each other. If you insert a piece of rubber between the wires, the electrons do not flow. The rubber material is ??
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How far away is Earth from the Sun?a. 93 miles b. 93 thousand milesc. 93 million milesd. 93 billion miles
If it takes 50n of force to lift a 450n what is the ma of the machine
Which statement describes a characteristiccommon to all electromagnetic waves andmechanical waves?(1) Both types of waves travel at the same speed.(2) Both types of waves require a material mediumfor propagation.(3) Both types of waves propagate in a vacuum.(4) Both types of waves transfer energy.
Send helpI have to do test corrections but I have no idea what the speed vs time graph should look like
B. 20 N
C. 1,176 N
D. 196 N User: A man standing on a bus remains still when the bus is at rest. When the bus moves forward and then slows down the man continues moving forward at the original speed. This is an example of the effect of
A. velocity.
B. gravity.
C. weight.
D. inertia.
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Well first of all, if the object's mass is 120 kg, then its mass is 120 kg.
It makes no difference where it happens to be located at the moment.
Its mass is 120 kg. Period. It doesn't change.
Weight = (mass) x (acceleration of gravity) .
Acceleration of gravity on the moon is 1.622 m/s² (rounded) .
Weight of the object = (120 kg) x (1.622 m/s²) = 194.6 Newtons.
(about 43.8 pounds)
The nearest choice is D). 196 N.
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When the bus starts moving forward, the man remains still.
He leans back, and soon catches up.
When the bus is moving but begins to slow down, the man
continues moving forward at the same speed. He leans forward,
until the bus stops, and then he eventually stops.
The simplest way to explain this (although it doesn't tell you much)
is to invoke 'inertia'. 'D' is the choice of the choices.
For second question, intertia is the thing that described in the question. Answer is D.
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Explanation :
The efficiency of a machine is always less than 100 %. This is because some of the energy gets lost in the form of heat energy, sound energy and frictional energy.
Mathematically it is defined as :
Where,
is the efficiency
is output work
is input work
Hence, this is the required explanation.
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Answer;
too small to be seen with an optical microscope
Explanation;
- An electron microscope is a type of microscope that is used to observe very tiny specimens whose features can not be observed by other types of microscopes. It uses a beam of electrons to generate an image of a given specimen whose features can be clearly observed and studied.
- Electron microscope has very high resolution and magnification as compared to other optical microscope hence can be observed in the study of micro-organisms such as viruses which would be difficult to study their features using optical microscopes.
An electron microscope is usually used for microorganisms that are too small to be seen with the unaided eye. You can adjust the size of the microorganism to see it more clearly by adjusting its magnification lens.
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Properties of acids include:
*Tasting sour
*Conduct electricity
*Corrosive
A few household acids would be lemons, vinegar, salt, and some sodas.
B: direction and distance
C: position and rate
D: distance and mass
please help which one are these . for science class
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Answer:
Explanation:
D Distance and Mass
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Therefore the unknown is either 514 or 506.
If 505 and 506 were struck together, the diff would be 1 Hz
If 505 and 514 were struck toghether, the diff would be 9 Hz which would be difficult to count accurately,
Therefore the unknown is 514
Answer:
514Hz
Explanation:
510 - unknown = 4Hz
unknown = 514 or 506
505 - unknown = numerous
unknown is most likely 514 because 1 beat that wouldve resulted from the 506 Hz isn't numerous.