Answer:
The frequency of a wave is 35 Hz.
Explanation:
Speed of a wave is 140 m/s
Wavelength of a wave is 4 m
It is required to find the frequency. The relation between frequency, speed and the wavelength of a wave is given by :
f is frequency
So, the frequency of a wave is 35 Hz.
Answer:
(i) Instantaneous velocity at t = 1 will be :-
v(t=1) = 44 m/s
(ii) Instantaneous acceleration at t = 1 will be :-
a(t=1) = 72 m/s²
Explanation:
(i) Instantaneous velocity is defined as the time- derivative of displacement,i.e,
v = .
or, v =
or, v = 20 + 24t³
Hence, instantaneous velocity at t = 1 will be
v(t=1) = 20 + 24(1)³
or, v(t=1) = 20 + 24
or, v(t=1) = 44 m/s
(ii) Instantaneous acceleration is defined as the time- derivative of velocity,i.e,
a = .
or, v =
or, v = 72t²
Hence, instantaneous acceleration at t = 1 will be
a(t=1) = 72(1)²
or, a (t=1) = 72 m/s².
Explanation:
<u>Answer</u>
95
<u>Explanation</u>
One box has 85 ball bearings.
17 boxes = 17 × 85
= 1,445 ball bearing
One contains 90 springs
15 boxes ⇒ 15 × 90
⇒ 1,350 spring
Number of ball bearing more than springs are;
1445 - 1350 =<em> 95</em>
Explanation:
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