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4 years ago

Which statement describes the force between charged particles

Physics

1 answer:

Anuta_ua [19.1K]4 years ago

3 0

The force (attractive if the charges are dissimilar, else repulsive) is along a line that connects the two particles.

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A proton is moving at 425 m/s. (a) How much work must be done on it to stop it? (A proton has a mass of 1.67×10−27 kg.) (b) Assu

Tpy6a [65]

Answer:

a)1.51*10^-22joules b) 1.89*10^-7m

Explanation:

Work done to stop the proton = the kinetic energy of the proton = 1/2 mv^2 = 1/2* 1.67*10^-27* 425*425 = 1.51* 10 ^ -22 joules

b) net force acting to stop the proton = 8.01*10^-16

Work done needed to stop the proton = net force acting opposite the motion * distance

Distance covered = need work done/ net force

Distance = 1.51*10^-22/8.01*10^-16= 1.89*10^-7m

8 0

4 years ago

A light ray reflects off a mirror with an angle of incidence of 65 degrees.

cluponka [151]

Answer:

Angle of reflection is also 65 degrees

Explanation:

angle of incidence = angle of reflection

3 0

3 years ago

Read 2 more answers

If the gravitational force between objects of equal mass is 2.30 x 10^‐8 N when the objects are 10.0 m apart, what is the mass o

Readme [11.4K]

Answer:

Mass of each objects, m = 185.69 kg

Explanation:

The gravitational force between two equal masses is, $F=2.3\times 10^{-8}\ N$

Separation between the masses, d = 10 m

Let m is the mass of each object. The gravitational force is given by :

$F=G\dfrac{m^2}{d^2}$

$m=\sqrt{\dfrac{F.d^2}{G}}$

$m=\sqrt{\dfrac{2.3\times 10^{-8}\times (10)^2}{6.67\times 10^{-11}}}$

m = 185.69 kg

So, the mass of each objects is 185.69 kg. Hence, this is the required solution.

6 0

3 years ago

A bullet with a mass ????b=13.5mb=13.5 g is fired into a block of wood at velocity ????b=253vb=253 m/s. The block is attached to

Lorico [155]

Answer:

450 grams

Explanation:

Given:

mass of the bullet, m = 13.5 g = 0.0135 kg

velocity of the bullet, v = 253 m/s

spring constant of the spring, k = 205 N/m

Compression of the spring, x = 35.0 cm = 0.35 m

Now, the kinetic energy of the moving system (bullet + board) will tend to move the spring

thus,

let velocity of the system, V

now, applying the concept of conservation of momentum, we have

mv = (M + m)V

where,

M is the mass of the block

thus,

V = mv/(M + m)

now,

the kinetic energy of the system = (1/2)(M + m)V²

the kinetic energy of the system = (1/2)(M + m)(mv/(m + M))²

Energy gained by the spring = (1/2)kx²

now,

equating both the energies, we get

(1/2)(M + m)(mv/(m + M))² = (1/2)kx²

(mv)²/(m + M) = kx²

on substituting the values, we get

(0.0135 × 253)²/(0.0135 + M) = 205 × (0.35)²

11.66/(0.0135 + M) = 25.1125

M = 0.450 kg = 450 grams

8 0

4 years ago

All matter is made up of particles called

Bad White [126]

Answer:

atoms and molecules

Explanation:

as opposed to being continuous or just including particles). On the following page, the idea is stated as one of four concepts in Dalton's theory: “All matter is composed of tiny, indivisible particles called atoms”

6 0

3 years ago

Read 2 more answers