Answer:
4.22 m
Explanation:
Una rampa es una máquina que se utiliza para levantar un objeto con una fuerza menor a la que realmente necesitarías. Cuanto mayor sea la longitud de la rampa, menor será la magnitud de la fuerza necesaria para levantar el objeto.
Dado que:
altura de la rampa = 1.5 m, carga = 4900 N, fuerza aplicada = 1633.33 N.
La fórmula de la rampa se da como:
fuerza aplicada * longitud de la rampa = peso de la carga * altura de la rampa
1633.33 * longitud de la rampa = 4900 * 1.5
longitud de la rampa = 4900 * 1.5 / 1633.33
longitud de la rampa = 4.22 m
Answer:
The new speed is 56.25 miles/hour.
Explanation:
Since speed = distance/time;
time = distance/speed.
While driving at 50 miles/hour, time taken for one to complete 1 mile is (1/50) hour
(1/50) hour = (1/50) × 3600s = 72 seconds.
So, if this time to complete 1 mile (72 seconds) is reduced by 8 seconds,
New time to complete 1 mile will be = 72 - 8 = 64 seconds = (64/3600) hour = 0.0178 hour
New speed would be = (1 mile/64 seconds) = (1 mile/0.0178 hour) = 56.25 miles/hour.
Hope this Helps!!!
D) It protects the earth from solar winds which contain particles which would destroy the atmosphere and end life on earth.
Answer:
- 1.67 m/s
Explanation:
mass of first ball, m = 10 kg
mass of second ball, M = 20 kg
initial velocity of first ball, u = 5 m/s
initial velocity of second ball, U = - 5 m/s (direction is opposite to the first ball)
Let the final velocity of the combined mass is V.
Use the principle of conservation of linear momentum
Momentum before collision = Momentum after collision
m u + M U = ( m + M) V
10 x 5 + 20 x (-5) = (10 + 20) x V
50 - 100 = 30 V
- 50 = 30 V
V = - 1.67 m/s
Thus, the combined mass moves in the negative x axis direction with the velocity of 1.67 m/s.
Answer:
An independent variable is exactly what it sounds like. It is a variable that stands alone and isn't changed by the other variables you are trying to measure.
Explanation:
someone's age might be an independent variable.
