a = 3.09 m/s²
<h3>Explanation</h3>
This question doesn't tell anything about how long it took for the car to go through 105 meters. As a result, the <em>timeless </em>suvat equation is likely what you need for this question.
In the <em>timeless</em> suvat equation,
where
- is the acceleration of the car;
- is the <em>final</em> velocity of the car;
- is the <em>initial</em> velocity of the car; and
- is the displacement of the car.
Note that <em>v</em> and <em>u</em> are velocities. Make sure that you include their signs in the calculation.
In this question,
Apply the <em>timeless</em> suvat equation:
.
The value of is greater than zero, which is reasonable. Velocity of the car is negative, meaning that the car is moving backward. The car now moves to the back at a slower speed. Effectively it accelerates to the front. Its acceleration shall thus be positive.
Answer:
Explanation:
given wave = 8.5 x 10⁻³ cos ( 172 x - 2730t )
here wave no k = 172
angular frequency ω = 2730
velocity of wave on the string
a )
v = ω / k
= 2730 / 172
= 15.87 m/s
time taken to travel full length
= 1.2 / 15.87
= 75.6 x 10⁻³ s
b )
For velocity of wave on the wire the formula is
T is tension and m is mass per unit length of wire
m = .0121 / ( 9.8 x 1.2 )
= 1.03 x 10⁻³ kg / m
15.87 =
W = .259 N
c ) wavelength λ = 2π / k
= 2 x 3.14 / 172
= .0182 m
no of wave length
n = 1.2 / .0182
= 66 approx .
Answer:
Warm water, cold air
In the current climate, a rule of thumb is that the ocean surface temperature should be above 26.5 or 27 degrees Celsius, or 80 degrees Fahrenheit, for a hurricane to make. ... Hurricanes are machines whose job is to maneuver heat from the nice and cozy ocean to the cold atmosphere above
Explanation:
Answer:
> The amount of heat required to melt ice and raise the temperature of water T o C T^oC ToC is Q = m L f + m c Δ T Q=mL_f+mc\Delta T Q=mLf+mcΔT Here m = 1.5 k g m=1.5 kg m=1.5kg L f = 3.33 ∗ 1 0 5 J