Why current remains same in series combination of resistors in all resistors and p.d. remains different?

Answers

Answer 1

Answer: Current at all points of a series circuit must be the same, because there's no place in the circuit where electrons are being manufactured, and no place where they're leaking out and falling on the floor. The nimber of electrons that leaves the loop is the same number that entered it. I'm not sure what is nmeant by "p.d. remains different" .

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When light passes through an object unchanged scientists call that process

Answers

The process is "transmission" of light. The object is "transparent".

When light passes directly through an object unchanged, that object is called transparent.
Hope that helped =)

a 1.2 m wire carries a current of 10.0 A in a uniform magnetic field of 0.050T. Find the magnitude of the magnetic force on the wire.

Answers

Ok so you want to use the following formula which corresponds to the magnetic force on a wire F = (B)(I)(L) (where L is usually represented by a small l but it looks like I which corresponds to current).

Ok so we need to know what all the letters stand for F of course is the magnetic force. B is the magnetic field strength ( 0.050 T). I is the current (10 A) and L is the length (1.2) of the wire where the magnetic force has an affect. Slot this into your equation and you're done.

F = (0.050)(10)(1.2)
= 0.6 N (Newtons
Hope this helps :).

A roller coaster with a potential energy of 235,200 J sits at the top of a 30 m high hill. What is the mass of the roller coaster? (Formula: PE = mgh)

Answers

A roller coaster with a potential energy of 235,200 J and sits at the top of a 30 m high hill has a mass equivalent to 799.18 kg. Using the formula of PE = mgh, all of the values are already known, so direct substitution can be used. PE is the potential energy, m is the mass, g is gravitational constant (9.81 m/s2), and h is the height.

Answer: its 800 kg thank me later ;)

A girl that has a mass of 30 kg is hanging from a bar motionless. Determine the following forces. If no force exists, enter 0. (use 10m/s2 for gravity) Weight Newtons
Applied force Newtons
Frictional Force Newtons
Normal Force Newtons
Tension Force
Net Force Newtons

Answers

Final answer:

The weight of the girl is 300 N. The applied force, frictional force, and normal force are all zero. The tension force in the bar is 300 N, and the net force is zero.

Explanation:

The weight of the girl can be calculated using the formula:

Weight = mass × gravity

where mass = 30 kg and gravity = 10 m/s2. Therefore, Weight = 30 kg × 10 m/s2 = 300 N.

Since the girl is motionless, the net force acting on her is zero. In this case, the tension force in the bar equals the weight of the girl, which is 300 N. The other forces (applied force, frictional force, and normal force) are also zero since the girl is not moving.

Therefore, the forces are:

Weight: 300 N
Applied force: 0 N
Frictional force: 0 N
Normal force: 0 N
Tension force: 300 N
Net force: 0 N

Learn more about forces here:

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The density of mercury is 13.6 g/mL. What is the volume of a 155-gram sample of mercury?

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The volume of a 155-gram sample of mercury is 11.397 mL if the density of mercury is 13.6 g/mL.

What is density?

It is defined as the mass-to-volume ratio. The density indicates the object's density and is represented by the symbol. The density is measured in kilograms per cubic meter.

It is given that:

The density of mercury is 13.6 g/mL.

The mass of the mercury is 155 grams.

As we know,

Volume can be defined as a three-dimensional space enclosed by an object or thing.

The density = mass/volume

13.6 = 155/volume

volume = 155/13.6

volume = 11.397 mL

Thus, the volume of a 155-gram sample of mercury is 11.397 mL if the density of mercury is 13.6 g/mL.

Learn more about the density here:

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You need to use the density formula.

$D = (m)/(V)$

$DV = m$

$V = (m)/(D)$

$V = (155gHg)/(13.6(g)/(mL)Hg)$

$V = 11.397mL$

Which describes an image that a concave mirror can make?

Answers

An image that a concave mirror can make is that it can form a real image that is projected out in front of the mirror. A concave mirror is a mirror that is curved inward in the middle. Using the mirror equation, you can deal with concave mirrors. It's like you're looking into a cave when try to look in a concave mirror.

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