2 years ago

What is the symbol of calcium in it's most stable form?

Physics

1 answer:

Licemer1 [7]2 years ago

6 0

Answer:Ca

Explanation:fact according to the periodic table

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Please help

Snezhnost [94]

Answer:

Range = 22.61 m

Explanation:

We can use the formula for the Range in flat ground, given by:

$Range=v_i^2\frac{sin(2\theta)}{g}$

which for our case renders:

$Range=15^2\frac{sin(80^o)}{9.8} \approx 22.61\,\,m$

4 0

2 years ago

Two rigid rods are oriented parallel to each other and to the ground. The rods carry the same current in the same direction. The

bazaltina [42]

Answer:

The current in the rods is 171.26 A.

Explanation:

Given that,

Length of rod = 0.85 m

Mass of rod = 0.073 kg

Distance $d = 8.2\times10^{-3}\ m$

The rods carry the same current in the same direction.

We need to calculate the current

I is the current through each of the wires then the force per unit length on each of them is

Using formula of force

$\dfrac{F}{L}=\dfrac{\mu_{0}I^2}{2\pi d}$

$\dfrac{mg}{L}=\dfrac{\mu_{0}I^2}{2\pi d}$

Where, m = mass of rod

l = length of rod

Put the value into the formula

$I^2=\dfrac{mgd}{\mu L}$

$I^2=\dfrac{0.073\times9.8\times8.2\times10^{-3}}{2\times10^{-7}}$

$I=\sqrt{29331.4}$

$I=171.26\ A$

Hence, The current in the rods is 171.26 A.

5 0

2 years ago

A car is traveling with a velocity of 24.4 m/s. It accelerates at a constant rate of 3.2m/s2. If the acceleration lasts for 5.6

larisa86 [58]

Answer: 42.32 ms-1

Explanation:

v = u+ at

v = 24.4 + ( 3.2×5.6)

v = 42.32 ms-1

6 0

3 years ago

If the total momentum for a system is the same before and after the collision, we say that momentum is conserved. If momentum we

andrew-mc [135]

Answer:

Ratio = 1:1

Explanation:

$P_{i}$ = initial momentum of the system

$P_{f}$ = final momentum of the system

For the momentum to be conserved , final total momentum must be equal to initial total momentum, so we have

$P_{f} = P_{i}$

Dividing both side by $P_{i}$ , we get

$\frac{P_{f}}{P_{i}} = \frac{P_{i}}{P_{i}} \\\frac{P_{f}}{P_{i}} = 1\\$

hence

Ratio = 1

5 0

3 years ago

Use the "Law of Reflection" to describe why you cannot see your reflection in a piece of paper.

Anni [7]

Answer:

it does not mirror the image

5 0

3 years ago