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Reil [10]
3 years ago
11

elements found in the same ______ have similar chemical properties. What should go in the blank? Row or column?

Physics
1 answer:
Temka [501]3 years ago
3 0
The answer is Column, however if you want to know the scientific word for it, it is also known as a group

(extra fact, a row is called a period)
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A shot-putter released the shot at an angle of 41.5 degrees and a height of 1.9 m with an initial velocity of 13.3 m/s. How far
liq [111]

Answer:

x = 17.88[m]

Explanation:

We can find the components of the initial velocity:

(v_{x})_{o}  = 13.3*cos(41.5)=9.96[m/s]\\(v_{y})_{o}  = 13.3*sin(41.5)=8.81[m/s]

We have to remember that the acceleration of gravity will be worked with negative sign, since it acts in the opposite direction to the movement in direction and the projectile upwards.

g = - 9.81[m/s^2]

Now we must find the time it takes for the projectile to hit the ground, as the problem mentions that it does not impact on the board.

y=y_{o} +(v_{y} )_{o} *t-0.5*g*(t)^{2} \\0=1.9+(8.81*t)-(4.905*t^{2})\\-1.9=8.81*t*(1-0.5567*t)\\t=0\\t=1.796[s]

With this time we can calculate the horizontal distance:

x=(v_{x})_{o} *t\\x=9.96*1.796\\x=17.88[m]

3 0
3 years ago
A person standing at the top of mountain aconcagua would be approximately 4.3 mi high. the radius of earth is 3959 mi. what is t
PilotLPTM [1.2K]
Besides ambitious, it would be 184.6 mi
5 0
3 years ago
Read 2 more answers
The function of a capacitor in an electric circuit is to?
Tema [17]

Well let's see:

A). No.  A capacitor doesn't measure anything.

B). No.  The power delivered to the circuit is determined by
              the battery or power supply and all the things in
              the circuit that dissipate energy.  A capacitor doesn't
              do any of these things.

C). No.  If any current actually flows between its plates,
             the capacitor is shot and can't do its job, and
             must be replaced.

D). Yes. A capacitor stores charges on its plates, and
              electrical energy in the field between its plates.
   
4 0
3 years ago
An air-filled parallel-plate capacitor is connected to a battery and allowed to charge up. Now a slab of dielectric material is
natita [175]

Answer:

The charge on the capacitor had increased

Explanation:

The expression for the capacitance of an air-filled parallel-plate capacitor is as follows as;

C=\frac{\epsilon _{0}A}{d}  

Here, C is the capacitance, \epsilon _{0} is the permittivity of free space, A is the area and d is the distance between the parallel plate capacitor.

When a slab of dielectric material is placed between the plates of the capacitor then the expression for the capacitance is as follows;

C=\frac{K\epsilon _{0}A}{d}

Here, K is the dielectric constant.

In the given problem, a slab is inserted between the plates of the capacitor then the capacitance of the capacitor will increase in this case. Therefore, the option (a) is true.

The expression for the charge stored in the capacitor is as;

Q= CV

Here, Q is the charge and V is the potential.

The charge will also increase in this case as the charge stored in the capacitor is directly proportional to the capacitance. Therefore, the option (d) is not true.

The expression for the energy stored in the capacitor is as follows;

E=\frac{CV^{2}}{2}

The voltage is constant in the given problem but the capacitance increases then the energy stored in the capacitor will increase. Therefore, the option (b) is not true.

The voltage across the capacitor will remain same as the capacitor is still connected to the battery. Therefore, the option (c) is not true.

Therefore, only option (a) is true.

3 0
3 years ago
Which of the following sources of pollution would be the most difficult to track and regulate?
Alik [6]
<span>lawn fertilizer runoff

Lawn fertilizer runoff can be the most difficult to track and regulate since it may have spread in the soil and was washed away together with the water particles. 


</span>Pollution is an ecological disturbance and turmoil that ruins and endangers life either in land or sea, even air. 
Three types of pollution exist:
Water pollution
Air pollution
<span>Land pollution </span>
3 0
3 years ago
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