All categories

2 years ago

Which subatomic particle identifies the element?

Physics

2 answers:

grin007 [14]2 years ago

3 0

A. protons.ekgfsbdbsi

AlladinOne [14]2 years ago

3 0

Answer:

A. Protons

Explanation:

Atomic number is an indicator of how many protons an element possesses in its nucleus. We use atomic number to identify an element. For example, carbon has 6 protons and an atomic number of 6.

You might be interested in

A merry-go-round consists of a uniform solid disc of 225kg and a radius of 6.0m. A single 80kg person stands on the edge when it

Rashid [163]

Answer:

Angular speed of the disc becomes 0.305 rev/s

Explanation:

As we know that there is no torque on the system of disc and the person

so we can use angular momentum conservation

here we will have

$I_1\omega_1 = I_2\omega_2$

so we have

$I_1 = \frac{1}{2}MR^2 + mR^2$

$I_1 = \frac{1}{2}(225)(6^2) + 80(6^2)$

$I_1 = 6930 kg m^2$

now when man moves towards the center by distance 3.5 m

$I_2 = \frac{1}{2}MR^2 + mr^2$

r = 6 - 3.5 = 2.5 m

$I_2 = \frac{1}{2}(225)(6^2) + (80)(2.5^2)$

$I_2 = 4550 kg m^2$

now we have

$6930 \times 0.20 = 4550 (\omega)$

$\omega = 0.305 rev/s$

6 0

3 years ago

State the first law of thermodynamics

Kitty [74]

Answer:

The first law of thermodynamics defines the internal energy (E) as equal to the difference of the heat transfer (Q) into a system and the work (W) done by the system.

7 0

3 years ago

Read 2 more answers

Charge is uniformly distributed throughout a spherical insulating volume of radius R=4.00 cm . The charge per unit volume is −6.

aleksley [76]

Answer

-8.67× 10^6 N/C

Explanation:

The Electric Field is defined as force per unit charge.

E = Q/ 4π£r2

Qv= −6.5 μCm3

Qv = Q/ V= Q/ 4/3 πr3

Hence Q = 4/3 πr3 × Qv

Hence E = 4/3 πr3 × Qv / 4π£r2= Qvr/3£

−6.5 μ × 4/ 3×8.854 ×10^-12

-6.5 × 4 × 10^6/3 = -8.67× 10^6 N/C

Note: £ = 8.854×10^-12m/F

is the permittivity of free space

Qv is the charge per unit volume

V is volume and volume

8 0

3 years ago

Se tiene una esfera de 100g, ¿Qué espacio ocupa?<br><br> La necesito, por favor!!!

ycow [4]

Answer:

No de español muy bien por favor pregúntalo en inglés

Explanation:

8 0

3 years ago

A plane flying horizontally above earth’s surface at 100. meters per second drops a crate. the crate strikes the ground 30.0 sec

Lena [83]

Since the plane is traveling at 100m/s horizontal to the surface of the earth, the crate will always have this horizontal velocity (neglecting air resistance) until it hits the ground. So the answer is 100m/s. Note the vertical speed continues to change as the crate accelerates downward toward earth (again neglecting air effects)

3 0

3 years ago