Answer:
answer should be C.) Independent variable since its the one being changed
Explanation:
Answer:
A.) 3.65 N*m²/C B) No C) 0º D) 90º
Explanation:
A) The electric flux, when the electric field is uniform across a gausssian surface, can be calculated as the dot product of the electric field vector, and the vector representing the area of the surface (normal to the surface and directed outward it by convention), as follows:
Flux = E*A*cos φ
where E = 20 N/C, A = 0.365 m², φ = 60º.
Replacing by the values, we can get the value of the electric flux, as follows:
Flux = 20 N/C* 0.365 m²*0.5 = 3.65 N*m²/C
B) While the area remains constant, and doesn't change orientation, the value of the flux will be the same, regardless the shape of the sheet.
C) When the normal to the sheet and the electric field are parallel each other, the surface will intercept the maximum number of field lines, i.e. the flux will be directly E*A*cos 0º = E*A (maximum value possible).
D) When the electric field is tangent to the surface, this means that no field lines will be intercepted by the sheet, so the flux is zero.
In this case, φ = 90º, cos φ = 0
⇒ E*A*cos 90º = E*A*0 = 0
A non-example of force would be something that stay sill like a balloon in the air..... taste, smell, feel, texture, color, opinion, faith, hope, sincerity, honest, speed, momentum, altitude, volume, loudness, area, length, acidity, obesity, nationalism, current, resistance, viscosity, wavelength, flow, rate, frequency, albedo, diameter, age, temperature, acceleration, body mass index, salinity, specific, specific gravity, consciousness, intelligence, refraction index, mass, time, date rate, switching speed, libido, focal length, and latency are not force. And even there are many other things that also are not force, too.
Answer:
The time it will take for the car to reach a velocity of 28 m/s is 7 seconds
Explanation:
The parameters of the car are;
The acceleration of the car, a = 4 m/s²
The final velocity of the car, v = 28 m/s
The initial velocity of the car, u = 0 m/s (The car starts from rest)
The kinematic equation that can be used for finding (the time) how long it will take for the car to reach a velocity of 28 m/s is given as follows;
v = u + a·t
Where;
v = The final velocity of the car, v = 28 m/s
u = The initial velocity of the car = 0 m/s
a = The acceleration of the car = 4 m/s²
t = =The time it will take for the car to reach a velocity of 28 m/s
Therefore, we get;
t = (v - u)/a
t = (28 m/s - 0 m/s)/(4 m/s²) = 7 s
The time it will take for the car to reach a velocity of 28 m/s, t = 7 seconds.
