Answer:
<em>The car took 3 hours to travel 180 miles</em>
Explanation:
<u>Constant Speed Motion</u>
An object travels at constant speed if the ratio of the distance traveled by the time taken is constant.
Expressed in a simple equation, we have:
Where
v = Speed of the object
d = Distance traveled
t = Time taken to travel d.
From the equation above, we can solve for t:
The car travels at v=60 mi/h for a distance of d=180 miles. The time taken is:
t = 3 hours
The car took 3 hours to travel 180 miles
Answer:
Explanation:
Using ohm's law
a) V = IR where V is voltage in Volt, I is current in Ampere and R is resistance in ohms
R = V / I = 1.50 V/ ( 2.05 /1000) A = 731.71 ohms
b) Power = IV = 
× v = 
= 
= 0.1107 W
c) E = IR + Ir = ( 731.71 × 0.0036) + ( 35 × 0.0036) = 2.76 V
d) Power use by the resistor = I²R = 0.0036² × 731.71 = 0.00948 W = 0.00948 W = 0.000009483 kw × ( 18 / 60 ) H = 2.84 × 10⁻⁶ KW-H
<span> force of 10.0 N
</span>
<span>distance of 0.9 m
w=f*d
w=10*0.9
=9.0 j</span>
Answer:increasing any of them, either mass or speed by 1unit will cause an increase in energy,
Explanation:
By increasing any of them, either mass or speed will cause an increase in energy.
Because kinetic energy is proportional to mass and also directly proportional to velocity
The wavelength of a sound wave is related to its frequency by the relationship:
where
f is the frequency
v is the speed of the wave
is the wavelength
The wave in our problem has wavelength of
and speed of
(this is the speed of sound in air), therefore its frequency is
And the period of the wave is equal to the reciprocal of its frequency:
