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3 years ago

True or False

Physics

2 answers:

trapecia [35]3 years ago

6 0

Answer:

1) A towel waving displays a transverse waves

→ True

2) Light waves are examples of transverse wave

→ True

Explanation:

Transverse waves are made up of crests and troughs.

$.$

devlian [24]3 years ago

4 0

Answer:

true

Explanation:

Hope it helped you brainiest plz

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If the period of a wave is 15 seconds, how many wavelengths pass a certain point in 2 minutes?

denpristay [2]

Hello
The period of a wave is the time it takes between two complete oscillations of the wave itself, i.e. it is the time that occurs between two consecutive wavelengths. Therefore, if we want to calculate how many wavelengths pass a certain point in $t=2~min=120~s$ , we need to divide the total time for the period of the wave, T:
$N= \frac{t}{T}= \frac{120~s}{15~s}=8$
So, the answer is 8 wavelengths.

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3 years ago

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Charra [1.4K]

Answer:

This refers when a spiker quickly strides towards the net before they jump in the air for an attack.

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3 years ago

An 1,840 W toaster, a 1,380 W electric frying pan, and a 70 W lamp are plugged into the same outlet in a 15 A, 120 V circuit. (T

Pavlova-9 [17]

Answer with Explanation:

We are given that

Power of toaster= $P_1=1840 W$

Power of electric frying pan= $P_2=1380 W$

Power of lamp= $P_3=70 W$

Current in circuit=15 A

Potential difference= V=120 V

We know that

Current= $\frac{P}{V}$

Using the formula

Current drawn by toaster= $I_1=\frac{1840}{120}=15.3 A$

Current drawn by electric frying pan= $I_2=\frac{1380}{120}=11.5 A$

Current drawn by lamp= $I_3=\frac{70}{120}=0.58 A$

5 0

3 years ago

25 Pts. - URGENT

Alex_Xolod [135]

Answer:

I'm pretty sure that it's -225, hope this helps

3 0

3 years ago

Suppose you increase your walking speed from 4m/s to 12m/s in a period of 1 s. What is your acceleration?

den301095 [7]

We use the following formula to determine our acceleration:
$acceleration = \frac{(final velocity) - (initial velocity)}{time} = \frac{change of velocity}{time}$
We normally use letters in this formula, which gives us:
$a = \frac{v}{t}$

Filling in this formula gives us:
Δv (change of velocity) = 12 - 4 = 8 m/s
t = 1s
$a = \frac{8}{1} = 8 m/s^2$
So our answer: the acceleration is $8m/ s^{2}$

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3 years ago