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MariettaO [177]
4 years ago
10

The momentum of an object is determined to be 7.2 ×× 10-3 kg⋅m/skg⋅m/s. Express this quantity as provided or use any equivalent

unit. (Note: 1 kgkg = 1000 gg).
Physics
1 answer:
7nadin3 [17]4 years ago
8 0

Answer:

Momentum, p = 720 g-cm/s

Explanation:

The momentum of an object is determined to be,

p=7.2\times 10^{-3}\ kg-m/s

We need to express this quantity in any equivalent units. We know that the conversions are as follows :

1 kg = 1000 g

and 1 m = 100 cm

p=7.2\times 10^{-3}\ kg-m/s=7.2\times 10^{-3}\times (1000\ g)\times (100\ cm)/s

p = 720 g-cm/s

So, the momentum of an object in any equivalent unit is 720 g-cm/s. Hence, this is the required solution.

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Consider two antennas separated by 9.00 m that radiate in phase at 120 MHz, as described in Exercise 35.3. A receiver placed 150
Dafna11 [192]

Answer:

a

  \Phi  =4.524 \  rad

b

   I   =  0.40637 I_o

Explanation:

From the question we are told that

  The distance of separation is  d =  9.0 \  m

  The frequency is f = 120 \  MHz  =  120  *10^{6} \  Hz

   The distance of the receiver from the antennas is D =  150 \  m

   The intensity measured is  I =  I_o

    The change in position of the receiver is by  \Delta D =  1.8 \  m

Gnerally the phase difference is mathematically represented as

       \Phi  = \frac{ 2 \pi  *  \Delta D}{\lambda}

Here \lambda  is the wavelength which is mathematically represented as

       \lambda  =  \frac{c}{f}

Here c is the speed of light with value  c = 3.0 *10^{8} \  m/s

=>     \lambda  =  \frac{3.0 *10^{8}}{ 120  *10^{6} }

=>     \lambda  =  \frac{3.0 *10^{8}}{ 120  *10^{6} }

=>     \lambda  = 2.5 \  m

So

 \Phi  = \frac{ 2* 3.142   * 1.8 }{2.5}

  \Phi  = \frac{ 2* 3.142   * 1.8 }{2.5}

  \Phi  =4.524 \  rad

Generally the intensity measured by the receiver is  

     I   = I_o  cos^2 [\frac{\Phi}{2} ]

=>   I   = I_o  [cos [\frac{4.524}{2} ]]^2

=>  I   = I_o  [cos [ 2.262]]^2

=>  I   =  0.40637 I_o

6 0
3 years ago
Why in drinking hot water, a thin-bottomed glass is taken?​
taurus [48]

Answer:

beacause it's contracts

Explanation:

when using a large bottomed glass the hot water cools that's why is good to use thin bottomed glass

6 0
3 years ago
2. If you exert a force of 10.0 N to lift a box a distance of 0.9 m, how much work have you done?
KonstantinChe [14]
<span> force of 10.0 N
</span>
<span>distance of 0.9 m
w=f*d
w=10*0.9
=9.0 j</span>
6 0
3 years ago
Read 2 more answers
A stone falls from rest from the top of a cliff. A second stone is thrown downward from the same height 2.7 s later with an init
Darina [25.2K]

Answer:4.05 s

Explanation:

Given

First stone is drop from cliff and second stone is thrown with a speed of 52.92 m/s after 2.7 s

Both hit the ground at the same time

Let h be the height of cliff and it reaches after time t

h=\frac{gt^2}{2}

For second stone

h=52.92\times \left ( t-2.7\right )+\frac{g\left ( t-2.7\right )^2}{2}---2

Equating 1 &2 we get

\frac{gt^2}{2}=52.92\times \left ( t-2.7\right )+\frac{g\left ( t-2.7\right )^2}{2}

\frac{g}{2}\left ( t-t+2.7\right )\left ( 2t-2.7\right )-\left ( t-2.7\right )52.92=0

13.23\times \left ( 2t-2.7\right )-\left ( t-2.7\right )52.92=0

26.46t-35.721-52.92t+142.884=0

t=4.05 s

4 0
3 years ago
Prepare a stock available at home following the procedure you learned in this lesson. Have a picture of the finished product and
Bingel [31]

Answer:

NO, 1. is stocks

2. is also stocks

bouquit GARNI IS NUMBER 3

NUMBER 4 IS ACID PRODUCTS

number 5 is brown stock

Explanation:

stocks are bones

6 0
3 years ago
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