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Gennadij
10 days ago
10

1. In a single atom, no more than 2 electrons can occupy a single orbital? A. True B. False

Physics
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A box of mass 3.1kg slides down a rough vertical wall. The gravitational force on the box is 30N . When the box reaches a speed
Ostrovityanka [3204]

Answer:

Explanation:

a) La fuerza neta que actúa sobre la caja en la dirección vertical es:

Fnet=Fg−f−Fp *sin45 °

aquí Fg representa la fuerza gravitacional, f es la fuerza de fricción, y Fp es la fuerza de empuje.

Fnet=ma

ma=Fg−f−Fp *sin45 °

​a=\frac{30-13-23*sin(45)}{3.1}

=0.24 m/s²

Vf =Vi +at

=0.48+0.24*2

Vf=2.98 m/s

b)

Fnet=Fg−f−Fp *sin45 °

=Fg−0.516Fp−Fp *sin45 °

=30-1.273Fp

Fnet=0 (Ya que la velocidad es constante)

Fp=30/1.273

=23.56 N

5 0
3 months ago
Read 2 more answers
A spacecraft is traveling with a velocity of +3250 m/s. Suddenly the retrorockets are fired, and the spacecraft begins to slow d
Yuliya22 [3333]

Answer:3249.33 m/s

Explanation:

Provided:

Initial velocity = 3250 m/s

Acceleration =-10 m/s^2

Displacement = 215 km

Applying the equation of motion:

v^2-u^2=2as

where:

v = the final velocity

u = the initial velocity

a = acceleration

s = displacement

v^2-3250^2=2\times (-10)\times 215

v^2=3250-4300

v = 3249.33 m/s

4 0
3 months ago
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