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3 years ago

What element shares the property of forming ions with a 1+ charge?

Physics

2 answers:

V125BC [204]3 years ago

6 0

Answer:sodium

Explanation:

The group 1A metals such as sodium and potassium

Oduvanchick [21]3 years ago

5 0

Answer:

the Group 1A metals such as sodium and potassium form +1 charges,

Explanation:

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The power in an electrical circuit is given by the equation P= RR, where /is

Rainbow [258]

Answer:D

Explanation:Electric power=I*I*R

=12*12*100

=14400watts

6 0

3 years ago

An astronaut stands on the surface of an asteroid. The astronaut then jumps such that the astronaut is no longer in contact with

Anna71 [15]

(D) The gravitational force between the astronaut and the asteroid.

Reason :

All the other forces given in the options, except (D), doesn't account for the motion of the astronaut. They are the forces that act between nucleons or atoms and neither of them accounts for an objects motion.

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3 years ago

A record turntable rotates through 5.0 rad in 2.8 s as it is accelerated uniformly from rest. What is the angular velocity at th

Usimov [2.4K]

Answer:

$\omega_f = 3.584\ rad/s$

Explanation:

given,

turntable rotate to, θ = 5 rad

time, t = 2.8 s

initial angular speed = 0 rad/s

final angular speed = ?

now, using equation of rotational motion

$\theta = \omega_i t + \dfrac{1}{2}\alpha t^2$

$5 = 0+ \dfrac{1}{2}\alpha\times 2.8^2$

$\alpha= \dfrac{10}{2.8^2}$

α = 1.28 rad/s²

now, calculation of angular velocity

$\omega_f = \omega_i + \alpha t$

$\omega_f =0 +1.28\times 2.8$

$\omega_f = 3.584\ rad/s$

hence, the angular velocity at the end is equal to 3.584 rad/s

4 0

3 years ago

Magnesium is a shiny, flexible metal that can be burned in the presence of air.

alukav5142 [94]

Answer:

A new substance was formed

Explanation:

According to this question, a shiny and flexible metal called Magnesium (Mg) is burnt in air to produce a white powder that has no shiny or flexible properties, however, has more weight than the magnesium metal itself.

This is possible because a CHEMICAL CHANGE has occured, hence, a new substance has been formed. The formation of a new substance during the burning process (chemical reaction), induced the increase in mass.

8 0

3 years ago

Match the phrase with the term. How hard the blood pushes on the inside of the blood vessels is called . The total amount of blo

taurus [48]

Answer:

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CARDIAC OUTPUT

When blood vessels open wider during exercise, they are said to ?

DILATE

How many times your heart beats in one minute is called ?

HEART RATE

The force that can put unhealthy tension on the heart as it is pumping is called ?

BLOOD PRESSURE

The amount of blood the heart pumps out in one beat is called?

STROKE VOLUME

Explanation:

4 0

3 years ago