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4 years ago

A small, dense center that has a positive charge and is surrounded by moving electrons

Physics

1 answer:

timama [110]4 years ago

7 0

A small dense centre that has a positive charge and is surrounded by moving electrons is called an Atomic Nucleus.

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Scientists think that convection currents flow in earth’s

torisob [31]

Answer: convection currents does flow because God created the earth and God it makes life flow

Explanation:

God

7 0

3 years ago

Consider a metal single crystal oriented such that the normal to the slip plane and slip direction are at angles of 60° and 35°,

Vedmedyk [2.9K]

Answer:

19.5324 MPa

Explanation:

Information provided

Angle between the normal to the slip plane with tensile axis, $\alpha=60^{o}
$

Angle by slip direction with tensile axis, $\beta=35^{o}$

Critical resolved shear stress, $\tau_{c}=8 MPa$

Applied stress $\sigma=12 MPa$

Shear stress at slip plane

$\tau=\sigma cos\alpha cos\beta$

$\tau=12cos60^{o}cos35^{o}=4.915 MPa$

$\tau$ hence crystal won’t yield

Applied stress, $\sigma$ for crystal to yield is given by

$\sigma=\frac {\tau_{c}}{cos\alpha cos\beta}$

$\sigma=\frac {8}{cos60cos35}=19.53239342 MPa$

$\sigma=19.5324 MPa
$

7 0

3 years ago

The diagram shows a box in the periodic table. 15 P Phosphorus 31.0 What is the atomic number of the element shown? A. 46.0 B. 1

natali 33 [55]

Answer:

b 15

Explanation:

the atomic number is the number of the element

4 0

3 years ago

A voltmeter is a device that measures _____.

olga55 [171]

A voltmeter its instrument used for measuring electrical potential difference between two points in an electric circuit. An ammeter is a measuring device used tomeasure the electric current in a circuit.

5 0

4 years ago

Read 2 more answers

Which of the following is an expression of Newton's second law? A. The acceleration of an object is determined by its mass and t

Sav [38]

Answer: A. The acceleration of an object is determined by its mass and the net force acting on it.

Explanation:

Newton's second law of motion explains that the acceleration of an object will depend on two vital variables which are the mass of the object and the net force that's acting on it.

It should be noted that the acceleration of the object directly depend on the net force while it depends inversely on the mass. Therefore, when the force that's acting on such object is increased, then the acceleration will increase as well. On the other hand, when there is an increase in mass, there'll be a reduction in the acceleration.

7 0

3 years ago