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2 years ago

HELP ME!!PLEASE ANSWER!!!!!!

Physics

1 answer:

Phoenix [80]2 years ago

5 0

There are 3 states of matter. Solid, Liquid, Gas. An example of each would be ice, water, steam,

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Traditional Indonesian music uses an ensemble called a gamelan that is based on tuned percussion instruments somewhat like gongs

Vlada [557]

Answer:

n = 10 beats

Explanation:

Given:

- Frequency of note f1 = 151 Hz

- Frequency of note f2 = 155 Hz

- The total time they ring t = 2.5 s

Find:

How many beats are heard

Solution:

- The frequency of beat (fb) is the difference between the two frequencies of notes as follows:

fb = f2 - f1

fb = 155 - 151

fb = 4 Hz

- The number of beats per second is also called beat frequency:

n = fb*t

n = 4*2.5

n = 10 beats

3 0

4 years ago

How does a logistic growth curve differ from an exponential growth curve?

Paladinen [302]

Firstly models are just predictors, they are not exact models. Exponential growth models are good when populations are small relative to the amount of resources available. ... This is where the exponential model breaks down. The logistic function tries to compensate for this with the carrying capacity.

8 0

3 years ago

Read 2 more answers

A chemical formula that contains a metal and oxygen

Sindrei [870]

Answer:

An Oxide

Explanation:

4 0

4 years ago

A Carnot engine operates with an efficiency of 26.0% when the temperature of its cold reservoir is 281 K. Assuming that the temp

VLD [36.1K]

Answer:

The temperature of cold reservoir should be 246.818 K for efficiency of 35%

Explanation:

In first case we have given efficiency of Carnot engine = 26 % = 0.26

Temperature of cold reservoir $T_L=281K$

We know that efficiency of Carnot engine is given by

$\eta =1-\frac{T_L}{T_H}$

$0.26 =1-\frac{281}{T_H}$

$T_H=379.72K$

For second Carnot engine efficiency is given as 35% = 0.35

And temperature of hot reservoir is same so $T_H=379.72K$

So $0.35=1-\frac{T_L}{379.72}$

$T_L=246.818K$

So the temperature of cold reservoir should be 246.818 K for efficiency of 35%

4 0

4 years ago

Define Simple harmonic motion (SHM). A body moving with SHM has an amplitude of 10 cm and a frequency of 100 Hz. Find (a) the pe

luda_lava [24]

Answer:

Explanation:

Simple harmonic motion is the motion that involves the cyclic and periodic motion of an object about a central point or equilibrium position, due to the effect of a restoring force, such that the object has the same maximum displacement during its motion on either side of the equilibrium point

(a) The parameters of the body moving with SHM are;

The amplitude of the motion of the body, a = 10 cm

The frequency of the complete cycles of the motion of the body, f = 100 Hz

The period of the oscillation, 'T', is the time it takes o complete one cycle

T = 1/f

∴ T = 1/100 Hz = 0.01 seconds

(b) The acceleration, a = -A·ω²·sin(ω·t)

Where;

One complete oscillation is given as ω·t = 2·π

Therefore at either end at the maximum displacement, which is at either end of the equilibrium position is reached at half a complete cycle, or ω·t = 2·π/2 = π

At the maximum displacement a = -A·ω²·sin(ω·t) = A·ω²·sin(π) = 0

Therefore, we have;

The acceleration, of the body at the maximum displacement, a = 0 m/s².

7 0

3 years ago