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4 years ago

If you increase the distance between two magnets what will happen

Physics

2 answers:

andriy [413]4 years ago

7 0

https://socratic.org/questions/how-does-distance-affect-magnetic-force

Kobotan [32]4 years ago

6 0

Magnetism isn’t a strong force. The farther it is from another magnet the less pull there will be. Thats actually the reason why the sun doesn’t just suck in mercury.

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What is one example of the use of an infrared sensor?

Bas_tet [7]

If im right it would be c.

7 0

4 years ago

Read 2 more answers

A small object carrying a charge of -4.00 nC is acted upon by a downward force of 19.0 nN when placed at a certain point in an e

Gala2k [10]

Explanation:

Given that,

Charge acting on the object, $q=-4\ nC=-4\times 10^{-9}\ C$

Force acting on the object, $F=19\ nC=19\times 10^{-9}\ C$ (in downward direction)

(a) The electric force acting in the electric field is given by :

$F=qE$

E is the electric field

$E=\dfrac{F}{q}$

$E=\dfrac{19\times 10^{-9}\ N}{4\times 10^{-9}\ C}$

E = 4.75 N/C

The direction of electric field is as same as electric force. But it is negative charge. So, the direction of electric field is in upward direction.

(b) The charge on the proton is, $q=1.6\times 10^{-19}\ C$

The force acting on the proton is :

$F=qE$

$F=1.6\times 10^{-19}\times 4.75$

$F=7.6\times 10^{-19}\ N$

If the charge on the proton is positive, the force on the proton is in upward direction.

Hence, this is the required solution.

8 0

3 years ago

Particle A of charge 2.76 10-4 C is at the origin, particle B of charge -6.54 10-4 C is at (4.00 m, 0), and particle C of charge

Vanyuwa [196]

Answer:

a) F_net = 30.47 N , θ = 10.6º

b) Fₓ = 29.95 N

Explanation:

For this exercise we use coulomb's law

F₁₂ = k $k \frac{ q_{1} \ q_{2} }{ r^{2} }$

the direction of the force is on the line between the two charges and the sense is repulsive if the charges are equal and attractive if the charges are different.

As we have several charges, the easiest way to solve the problem is to add the components of the force in each axis, see attached for a diagram of the forces

X axis

Fₓ = $F_{bc x}$

Y axis

$F_{y}$ Fy = $F_{ab} - F_{bc y}$

let's find the magnitude of each force

$F_{ab}$ = 9 10⁹ 2.76 10⁻⁴ 1.02 10⁻⁴ / 3²

F_{ab} = 2.82 10¹ N

F_{ab} = 28.2 N

$F_{bc}$ = 9 10⁹ 6.54 10⁻⁴ 1.02 10⁻⁴ / 4²

F_{bc} = 3.75 10¹ N

F_{bc} = 37.5 N

let's use trigonometry to decompose this force

tan θ = y / x

θ = tan⁻¹ and x

θ= tan⁻¹ ¾

θ = 37º

let's break down the force

sin 37 = F_{bcy} / F_{bc}

F_{bcy} = F_{bc} sin 37

F_{bcy} = 37.5 sin 37

F_{bcy} = 22.57 N

cos 37 = F_{bcx} /F_{bc}

F_{bcx} = F_{bc} cos 37

F_{bcx} = 37.5 cos 37

F_{bcx} = 29.95 N

let's do the sum to find the net force

X axis

Fₓ = 29.95 N

Axis y

Fy = 28.2 -22.57

Fy = 5.63 N

we can give the result in two ways

a) F_net = Fₓ i ^ + $F_{y}$ j ^

F_net = 29.95 i ^ + 5.63 j ^

b) in the form of module and angle

let's use the Pythagorean theorem

F_net = $\sqrt{ F_{x}^2 + F_{y}^2 }$

F_net = √(29.95² + 5.63²)

F_net = 30.47 N

we use trigonometry for the direction

tan θ= $\frac{ F_{y} }{ F_{x} }$

θ = tan⁻¹ \frac{ F_{y} }{ F_{x} }

θ = tan⁻¹ (5.63 / 29.95)

θ = 10.6º

3 0

3 years ago

Define are sources of energy

OleMash [197]

$\boxed{\sf{QUESTION:}}$

Define sources of energy

$\boxed{\sf{ANSWER:}}$

Energy is the capacity of a body to do work.

We Classify the sources of energy on the basis of:

Occurence:

Natural Sources: Natural energy sources are those which are made available to us by nature. Solar energy, wind energy, energy from water (hydro energy) are some of such natural sources of Energy.
Synthetic Sources: Synthetic energy are those that use man-made materials as sources of energy. Fir example, chemical energy, stored in the batteries, (used in calculators, watches, etc.) is a synthetic source of energy.

Physical State:

Solid: Firewood, Charcoal, coal are examples of solid fuels.
Liquid: Kerosene, Petrol & diesel are all liquid fuels.
Gas: Petroleum gas, commonly used as LPG (Liquified Petroleum Gas), & natural gas, also used CNG (Compressed Natural Gas), are examples of gaseous fuels

Availability:

Renewable: A renewable source of energy is a natural resource that can replenish itself naturally over a short period of time. Wind, sun, biomass (from plants) & hydropower (from water) are all renewable sources of energy. These arr inexhaustible natural resources.
Non-renewable: Energy sources which get us & cannot be replaced or replenished in a short period of time are called non-renewable sources of energy. These are also called exhaustible natural resources. Fossil fuels, (like petroleum, natural gas & coal), are non-renewable sources of energy.

<h2>Hope It's Helped! :D</h2>

6 0

3 years ago

An airline employee tosses two suitcases in rapid succession with a horizontal velocity of 7.2 ft/s onto a 50-lb baggage carrier

zalisa [80]

Answer:

m₁ = 70 lb

Explanation:

Here we will use the law of conservation of momentum:

m₁u₁ + m₂u₂ + m₃u₃ = m₁v₁ + m₂v₂ + m₃v₃

where,

m₁ = mass of first suitcase = ?

m₂ = mass of second suitcase = 30 lb

m₃ = mass of baggage carrier = 50 lb

u₁ = initial speed of first suitcase = 7.2 ft/s

u₂ = initial speed of second suitcase = 7.2 ft/s

u₃ = initial speed of baggage carrier = 0 ft/s

v₁ = Final speed of first suitcase = 4.8 ft/s

v₂ = Final speed of second suitcase = 4.8 ft/s

v₃ = Final speed of baggage carrier = 4.8 ft/s

because after collision all three will have same speed

Therefore,

(m₁)(7.2 ft/s) + (30 lb)(7.2 ft/s) + (50 lb)(0 ft/s) = (m₁)(4.8 ft/s) + (30 lb)(4.8 ft/s) + (50 lb)(4.8 ft/s)

(m₁)(7.2 ft/s) + (216 lb ft/s) + (0 lb ft/s) = (m₁)(4.8 ft/s) + (144 lb ft/s) + (240 lb ft/s)

(m₁)(7.2 ft/s) - (m₁)(4.8 ft/s) = 168 lb ft/s

m₁ = (168 lb ft/s)/(2.4 ft/s)

m₁ = 70 lb

6 0

3 years ago