All categories

3 years ago

Suppose that a pendulum has a period of

Physics

1 answer:

Yakvenalex [24]3 years ago

4 0

Explanation:

period of pendulum = time taken for 1 oscillation = time taken for 1 complete back and forth vibration

q1 ans is given in question its 1.5 sec

q2 ans is 1.5 sec longer than 1 sec period

You might be interested in

Express the rate of reaction in terms of the change in concentration of each of the reactants and products: A(g) + 2B(g) → C(g)

AnnyKZ [126]

Answer :

The correct expression for rate of reaction is:

$Rate=-\frac{d[A]}{dt}=-\frac{1}{2}\frac{d[B]}{dt}=+\frac{d[C]}{dt}$

The [A] decreasing at 0.14 mol/L.s

Explanation :

The given rate of reaction is,

$A(g)+2B(g)\rightarrow C(g)$

The expression for rate of reaction :

$\text{Rate of disappearance of A}=-\frac{d[A]}{dt}$

$\text{Rate of disappearance of B}=-\frac{1}{2}\frac{d[B]}{dt}$

$\text{Rate of formation of C}=+\frac{d[C]}{dt}$

So,

$Rate=-\frac{d[A]}{dt}=-\frac{1}{2}\frac{d[B]}{dt}=+\frac{d[C]}{dt}$

Now we have to calculate how fast is [A] decreasing.

Given:

$-\frac{d[B]}{dt}=0.28mol/L.s$

$-\frac{1}{2}\frac{d[B]}{dt}=-\frac{1}{2}\times 0.28mol/L.s=-0.14mol/L.s$

$-\frac{d[A]}{dt}=-\frac{1}{2}\frac{d[B]}{dt}=-0.14mol/L.s$

Hence, the [A] decreasing at 0.14 mol/L.s

8 0

4 years ago

compare and contrast sound waves and light waves . include the physical properties and various behaviors each wave exhibits incl

Liula [17]

Sound waves are things you can hear but you cant see. light waves on the other hand you can see when something gets to hot these are called heat waves. on the other hand they both are the same because they both are waves of something.

4 0

3 years ago

Suppose that Star X and Star Y both have redshifts, but Star X has a smaller redshift than Star Y. What can you conclude?

MakcuM [25]

Red shift of star is defined as its wavelength. Star with smaller red shift have smaller wavelength, while star with greater red shift have greater wavelength. We can say that, Star X have smaller wavelength, while star Y have greater wavelength.

6 0

4 years ago

Read 2 more answers

A wave hits a wall as shown. A brick wall with a green arrow pointing to the wall from below and right at a shallow angle. Anoth

bulgar [2K]

Answer:

reflection

Explanation:

5 0

3 years ago

At winter design conditions, a house is projected to lose heat at a rate of 60,000 Btu/h. The internal heat gain from people, li

xeze [42]

Answer:

15.83 KW

Explanation:

Losing heat at a rate = 60000btu/h

Gaining heat at a rate = 6,000btu/h

The difference in heat levels

= 60000btu/h - 6000btu/h

= 54000btu/h

So we need to convert 54000btu/h to KW

1kw = 3412.142btu

? = 54000btu

We cross multiply

54000btu x 1kw = ?3412.142btu

So we divide through by 3412.142 to get the unknown

54000/3412.142

= 15.83kw

So we can conclude that 15.83kw is the required power of this heater to keep the house at a constant temperature

3 0

4 years ago