What kind of image is formed by an object that is placed beyond the center of curvature on the principal axis of a concave mirror?A.
real, inverted, the same size as the object, and at the same distance as the object
B.
real, inverted, larger than the object, and farther from the mirror than the object
C.
virtual, upright, left-right reversal, the same size as the object, and at the same distance as the object
D.
real, inverted, smaller than the object, and closer to the mirror than the object
E.
virtual, upright, larger than the object, and farther from the mirror than the object

Answers

Answer 1

Answer:

Answer:D.

Real, inverted, smaller than the object, and closer to the mirror than the object

Explanation: Real images will be inverted. As it is beyond the centre of curvature it is also beyond 2F which means that the image is inside the centre of curvature ( between F and 2F from the mirror ) As the image is closer to the mirror than the object it must be diminished in size

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(Coulomb's Law) can anyone tell me if there is any cases in which the electrostatic force between 2 objects is 0?

Answers

Well, just look at Coulomb's law, set it equal to zero, and then
see what it would take to make the equation true.

Electrostatic force =
(a constant number) x (charge#1) x (charge#2) / (distance between them)² = 0

There you have an equation, with some stuff on the left side that's all equal to zero.

The stuff is all in the form of one fraction. In order for the fraction to be zero,
either the numerator is zero, or else the denominator is infinite.

So ?

The force is zero if ...

-- at least one of the charges is zero, OR

-- the charges are an infinite distance apart.

If you can arrange for either of those conditions, then you'll have zero force.

Eletrostatic force between only two charges never is null. But if there are interactions with 3 or more charges is possible between two of them be null.

What is the value of current when the voltage is 8 volts

Answers

That depends on the resistance between the ends of the voltage.

A constant force is applied to an object, causing the object to accelerate at 10 m/s^2. What will the acceleration be if: a) The force is halved? b) The object's mass is halved? c) The force and the object's mass are both halved?

Answers

What you need to know is that the force is

F=ma

The force is the product of mass and acceleration

this means that the acceleration is

a=F/m

a) The force is halved?
this means that f will be $(F)/(2)$ now:

a= $(F)/(2m)$

So the accelaration will also he halved (it's the original acceleratation divided by 2)

b) The object's mass is halved?
a= $(F)/(m/2)$ =a= $(F2)/(m)$

which is the original acceleration times two!! so it will double

c) The force and the object's mass are both halved?
now we have

a= $(F/2)/(m/2)$ =a= $(2F)/(2m)$ =a= $(F)/(m)$

so they will cancel each other out and the acceleration will stay the same!

A bike moves. 50 m in 10 seconds calculate the speed of the bike

Answers

The speed of the bike is calculated by dividing the total distance travelled by the total time taken, which in this case is 50 meters divided by 10 seconds. This yields a speed of 5 meters per second.

This involves a concept from Physics called speed.

Speed is defined as the distance covered by an object divided by the time taken to cover that distance.

Since the bike moves 50 meters in 10 seconds, to calculate the speed:

Identify the distance covered which is 50 meters.

Identify the time taken which is 10 seconds.

Divide the distance by the time to get the speed = 50 m / 10 s = 5 m/s. So, the speed of the bike is 5 meters per second.

Learn more about speed here:

brainly.com/question/22610586

#SPJ2

Answer:

We know that

Speed = Distance/ Time

Explanation:

Distance is 50 m
Time is 10 seconds

Speed = 50/10

= 5 m/s

If an object is NOT accelerating, then one knows for sure that it is ___.A. at rest
B. moving with a constant speed
C. slowing down
D. maintaining a constant velocity

Answers

"Zero acceleration" means "velocity" that's not changing.

Sadly, it seems that both of these words are almost always
misinterpreted and misunderstood. "Acceleration" does NOT
mean "speeding up", and "velocity" does NOT mean speed.

"Velocity" is the speed AND direction of motion. So, for example,
'30 miles per hour north' and '30 miles per hour west' are the same
speed but different velocities.

"Acceleration" is ANY change in speed OR direction. Consider three
different families in three different cars. One car is speeding up, one is
slowing down, and the third is driving around a curve at a steady speed.
ALL three of the cars are accelerating.

Answer:

Zero acceleration means velocity that's not changing.

Explanation:

An ocean wave has a wavelength of 2 meters and a period of 5 seconds. What is the speed of the wave?

Answers

the answer is 2 meters per second!

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