That depends on how soon you want it to reach 5 m/s/s. Without friction, ANY force will accelerate the car, like a mosquito pushing on it, but a Space Shuttle booster will accelerate it at a greater rate.
Answer:
In a collision, the velocity change is always computed by subtracting the initial velocity value from the final velocity value. If an object is moving in one direction before a collision and rebounds or somehow changes direction, then its velocity after the collision has the opposite direction as before.
Explanation:
Answer:
a) 800 km
b) 9.79° & 12.47°
Explanation:
It is known that the wavelength of any material or substance is given by the relation 入 = v/f
From the question, the time between the crest is given as 1.0 h, therefore, t = 1.0 h
Also, remember that frequency, f can be represented by
f = 1/t, and thus,
f = 1/1.0 h = 1.0 h^-1. This is our frequency, and would be used in the primary stated formula
入 = v/f, from the question, the speed is already stated as 800 km/h, so we apply directly
入 = 800 / 1
入 = 800 km. Therefore, the wavelength of the tsunami is 800 km
B,
the smallest angle between the Southern tip of Africa is
Sinθ = 800 / 4500
Sinθ = 0.17
θ = Sin^-1 0.17
θ = 9.79°
The smallest angle between the Southern end of Australia is
Sinθ = 800 / 3700
Sinθ = 0.216
θ = Sin^-1 0.216
θ = 12.47°
Answer:
(a): 
.
(b): 20.94 Volts.
Explanation:
<u>Given:</u>
- Area of the coil = A.
- Number of turns of the coil = N.
- Magnetic field in which the coil is placed = B.
- The frequency with which the coil is rotating = f.
<h2>
(a):</h2>
The magnetic flux linked with a coil is defined as
where,
is the area vector of the coil, directed along the normal to the plane of the coil.
= angle between the magnetic field and the area vector of the coil.
Assuming that the magnetic field is along the normal to the plane of the coil, initially.
Therefore, at any later time t, the angle which the magnetic field makes with the normal to the plane of the coil is is given by
Therefore, the magnetic flux linked with the coil at any time t is given by
According to the Faraday's law of electromagnetic induction, the emf induced in the coil is given by
<h2>
(b):</h2>
The amplitude of the alternating voltage is the maximum value of the induced emf in the coil, the induced emf in the coil is maximum when 
.
Therefore, the amplitude of the alternating voltage is given by
Given values are:
- N = 100 turns.
- A =
. - B = 0.1 T.
- f = 2000 rev/min =
Putting all these values,
Answer:
chlorine is a non-metal.
Explanation:
a chlorine atom has 7 electrons in its outer shell. chlorine is in group 7 of the periodic table. two chlorine atoms will each share one electron to get a full outer shell and form a stable cl2 molecule.
