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Vitek1552 [10]
4 years ago
10

Consider the free-body diagram. Assume there is a net force of 30N to the right and the friction force equals 20N. What is the a

pplied force in this situation?
A.) 20N
B.) 30N
C.) 50N
D.) 80N

Physics
1 answer:
oksano4ka [1.4K]4 years ago
6 0

Answer:the answer would be C.50N

Explanation:I just took the test

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True or false. The number of images formed depends upon the angle between the mirrors.<br>* ****​
aleksandrvk [35]

yes it's true................

#indian

3 0
3 years ago
The unit of electrical current is the ampere (A).
IrinaVladis [17]

Answer:

option B

Explanation:

Current unit is ampere (A)

Ampere will be equivalent to = ?

we know,

Current can be define as the charge per unit time

I = \dfrac{Q}{t}

unit of charge(Q) is coulomb which is equal to C.

unit of time(t) is equal to 's'.

now,

I = \dfrac{C}{s}

unit of I = C/s

ampere(A) is equivalent to C/s

The correct answer is option B

4 0
3 years ago
How fast does a 3 kg rocket accelerate if a force of 140 N is applied?
elixir [45]
<h3>Answer:</h3>

46.67 m/s²

<h3>Explanation:</h3>

<u>We are given;</u>

  • Mass of a rocket = 3 kg
  • Force applied = 140 N

we are supposed to calculate the acceleration of the rocket;

  • We are going to use the second Newton's law of motion;
  • According to Newton's second Law of motion force is equivalent to the product of mass and acceleration.
  • This is from the fact that the resultant force and the rate of change in linear momentum are directly proportional.

Therefore;

F = Ma

In this case;

Rearranging the formula

a = F ÷ m

  = 140 N ÷ 3 kg

  = 46.67 m/s²

Thus, the acceleration of the rocket is 46.67 m/s²

3 0
4 years ago
Debido al desorden en el laboratorio un científico tiene 2 termómetros diferentes pero no sabe en qué escalas están por lo que d
just olya [345]

Answer:

La escala del termómetro ''A'' es grados Celsius.

La escala del termómetro ''B'' es grados Fahrenheit.

Explanation:

Para hallar en qué escalas están los termómetros partimos de que la mezcla a la cuál se midió su temperatura mantuvo su temperatura constante.

Esto quiere decir que los termómetros están expresando la misma temperatura pero en una escala distinta.

Sabemos que dada una temperatura en grados Celsius ''C'' si la queremos convertir a grados Fahrenheit ''F'' debemos utilizar la siguiente ecuación :

F=(\frac{9}{5})C+32 (I)

Ahora, si reemplazamos y asumimos que la temperatura de 18° es en grados Celsius, entonces si reemplazamos C=18 en la ecuación (I) deberíamos obtener F=64.4 ⇒

F=(\frac{9}{5}).(18)+32=32.4+32=64.4

Efectivamente obtenemos el valor esperado. Finalmente, corroboramos que la temperatura del termómetro ''A'' está medida en grados Celsius y la temperatura del termómetro ''B'' en grados Fahrenheit.

6 0
3 years ago
If you catch the ruler 4.9 cm from the lower end, what is your reaction time?
Luba_88 [7]

Answer:

0.10s

Explanation:

the fall time is

4.9/100=.5*9.81*t^2

solve for t

6 0
3 years ago
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