2 years ago

Balance these equations:

Physics

1 answer:

Katen [24]2 years ago

3 0

Sorry, I most likely did this wrong; but hopefully I didn't!

HgO2

Na+H2CI

K2CI2

C2H6O2--> H2CO2

C5H12O2--> H2CO3

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a 0.24 kg blob of clay is thrown at a wall with an initial velocity of 19m/s. the clay comes to a stop against the wall in 82ms,

leva [86]

As per Newton's law we can say

$F = \frac{dP}{dt}$

here we can say

$F = \frac{m(v_f - v_i)}{\delta t}$

now we know that

$v_f = 0$

$v_i = 19 m/s$

$\delta t = 82 ms$

mass = 0.24 kg

now by above formula we will have

[tex]F = \frac{0.24(0 - 19)}{82*10^{-3}}[\tex]

so force on the wall is given by

F = 55.6 N

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2 years ago

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jenyasd209 [6]

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2 years ago

At a certain point on a heated metal plate, the greatest rate of temperature increase, 3 degrees Celsius per meter, is toward th

Katena32 [7]

Explanation:

Formula to determine the rate of temperature increasing will be calculated as follows.

$D_{u}F = \Delta F.\vec{u}$

= $|\Delta F|.|j| cos \theta$

= $3.|1|.cos(\frac{\pi}{4})$

= $3 \times \frac{1}{\sqrt{2}}$

= $\frac{3 \sqrt{2}}{2}$

= 2.121

Thus, we can conclude that the rate at which the temperature increasing is 2.121.

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2 years ago

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How many photons per second are emitted by the antenna of a microwave oven if its power output is 1.00 kw at a frequency of 2515

Norma-Jean [14]

The power of the antenna is
$P=1.00 kW=1000 W$
and since the power is the emitted energy divided by the time, the energy emitted per second is
$E=Pt = (1000 W)(1 s)=1000 J$

The frequency of the emitted photons is
$f=2515 MHz=2.515 \cdot 10^9 Hz$
So the energy of a single photon is
$E_1=hf=(6.6 \cdot 10^{-34} Js)(2.515 \cdot 10^9 Hz)=1.66 \cdot 10^{-24} J$

Therefore, to find the number of emitted photons per second, we should divide the total energy emitted by the antenna in 1 second by the energy of a single photon:
$N= \frac{E}{E_1}= \frac{1000 J}{1.66 \cdot 10^{-24} J}= 6.02 \cdot 10^{26}$

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2 years ago

.89m/s A vehicle that starts to move from the rest gets an acceleration of 5m/s² within 2 seconds. Calculate the velocity and di

GuDViN [60]

<u>Explanation:</u>

s = ? u = 0m/s v = ? a = 5m/s² t = 2s

v = u + at

= 0 + (5 x 2)

= 10 m/s

s = ut + 1/2 at²

= (0)(2) + x $\frac{1}{2}$ x 5 x 2²

= 10 m

Hope this helps!

5 0

1 year ago