Answer:
differences and similarities
Explanation:
An electric bell is a mechanical or electronic bell that functions by means of an electromagnet. When an electric current is applied, it produces a repetitive buzzing, clanging or ringing sound. whereas,
A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by excess current from an overload or short circuit. Its basic function is to interrupt current flow after a fault is detected.
The wave travels at the speed of sound in water:
.
The frequency of the wave is
so we can find its wavelength
by using the basic relationship between frequency, wavelength and speed of the wave:
The answer you are looking for is Gneiss my dude.
Answer:
<em>The building is 54.66 m tall</em>
Explanation:
<u>Free Fall</u>
It occurs when an object falls under the sole influence of gravity and do not encounter air resistance.
If an object is dropped from rest in a free-falling motion, it falls with a constant acceleration called the acceleration of gravity, which value is .
The distance traveled by a dropped object at time t is:
The watermelon is dropped from a tower dorm and takes t=3.34 seconds to hit the ground.
The distance traveled in that time is the height of the building:
h = 54.66 m
The building is 54.66 m tall
Answer:
a) t = 4.04 s
, b) x = 89.77 m
Explanation:
This is a one-dimensional kinematics exercise.
a) Let's use caution to find the time, the vehicle speed when stopped is zero
v = v₀ - at
let's reduce the magnitudes to the SI system
v₀ = 160 km /h (1000m / 1km) (1h / 3600s) = 44.44 m / s
0 = v₀ - at
t = v₀ / a
t = 44.44 / 11
t = 4.04 s
b) to calculate the distance traveled we use
x = v₀t - ½ a t²
x = 44.44 4.04 - ½ 11.0 4.04²
x = 179.54 - 89.77
x = 89.77 m