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3 years ago

2. How is frequency described in mathematical terms?

Physics

2 answers:

alexdok [17]3 years ago

4 0

Answer:

Explanation:

Frequency refers to the number of occurrences of a periodic event per time and is measured in cycles/second. In this case, there is 1 cycle per 2 seconds. So the frequency is 1 cycles/2 s = 0.5 Hz.

Strike441 [17]3 years ago

4 0

Answer:

Frequency= 1c/2sec

Explanation:

Frequency refers to the number of occurrences of a periodic event per time and is measured in cycles/second.

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Marcel is helping his two children, Jacques and Gilles, to balance on a seesaw so that they will be able to make it tilt back an

julia-pushkina [17]

Answer:

Explanation:

Jacques's weight = W

Jacques's distance from the pivot = L

Gilles's weight = w

Gilles's distance from the pivot must be L1

For the two boy to balance each other, they must generate equal amount of torques around the pivot

Torque = distance x weight

For Jacques, the torque generated = WL

For Gilles, the torque generated = wL1

Balancing the two torques, we have

WL = wL1

the distance L1 must be equal to

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3 years ago

Which quantities are vectors

Zarrin [17]

Answer:

For example, displacement, velocity, and acceleration are vector quantities, while speed (the magnitude of velocity), time, and mass are scalars. To qualify as a vector, a quantity having magnitude and direction must also obey certain rules of combination.

Explanation:

8 0

3 years ago

Read 2 more answers

In doing a load of clothes, a clothes dryer uses 15 A of current at 240 V for 55 min. A personal computer, in contrast, uses 2.7

KatRina [158]

Answer:

Available usage time for the computer = 10.185 hrs

Explanation:

for the dryer;

I = 15 A, V=240 V , t= 55min,

convert time from min to sec. t = 55*60 =3300 sec

Energy = IVt

Energy = 15*240*3300

Energy = 11,880,000 J

=11,800 KJ

using the energy for the clothes dryer to calculate for the time spent on the computer,

Energy = IVt

for the computer;

I = 2.7A V=120V , t=?

$t=\frac{energy}{IV}$

$t=\frac{11,800,000}{2.7*120}$

t=36,666.7sec

convert this value to hour by dividing by 3600

$t=\frac{36,666.7}{3600} \\t=10.185hrs$

5 0

3 years ago

When 1 carbon atom combines with 2 oxygen atoms, the resulting substance is called?

Kipish [7]

CO2 or carbon dioxide. You breathe it out and it is one of the greenhouse effects gasses that need to be limited.

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4 years ago

A boy pulls with a 20 N force, at a 20 degree incline. What part of the force moves the wagon?

nalin [4]

Answer:

horizontal direction force move wagon at 18.79 N

Explanation:

given data

force F = 20 N

angle = 20 degree

to find out

What part of the force moves the wagon

solution

we know here as per attach figure

boy pull a wagon at force 20 N at angle 20 degree

so there are 2 component

x in horizontal direction i.e F cos20

and y in vertical direction i.e F sin20

so we can say

horizontal direction force is move the wagon that is

horizontal direction force = F cos 20

horizontal direction force = 20× cos20

horizontal direction force = 18.79 N

so horizontal direction force move wagon at 18.79 N

4 0

3 years ago