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Maslowich
4 years ago
6

Which is a molecule? Select one: a. graphene b. NaCl c. Ne d. trail mix

Physics
2 answers:
Ede4ka [16]4 years ago
8 0
What Is A Molecule? B) NaCi
aivan3 [116]4 years ago
8 0
B. NaCl

Hope this helps.

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An eagle flying at 35 m/s emits a cry whose frequency is 440 Hz. A blackbird is moving in the same direction as the eagle at 10
Akimi4 [234]

Answer:

a)  F=475.7Hz

b)  F'=410.899Hz

Explanation:

From the question we are told that:

Velocity of eagle V_1=35m/s

Frequency of eagle F_1=440Hz

Velocity of Black bird V_2=10m/s

Speed of sound s=343m/s

a)

Generally the equation for Frequency is mathematically given by

 F=f_0(\frac{v-v_2}{v-v_1})

 F=440(\frac{343-10}{343-35})

 F=475.7Hz

b)

Generally the equation for Frequency is mathematically given by

 F'=f_0(\frac{v+v_2}{v+v_1})

 F'=440(\frac{343+10}{343+35})

 F'=410.899Hz

7 0
4 years ago
When an airplane experiences drag, are the forces added or subtracted?
s344n2d4d5 [400]
Added because force increase as it experiences drag.
6 0
3 years ago
Read 2 more answers
By exerting a force on the astronaut, the vehicle in which they orbit experiences an equal and opposite force. If the mass of th
yaroslaw [1]

Answer:

The astronaut's acceleration is 155.1 times the vehicle's acceleration

Explanation:

These effects due to Newton's third law of action and reaction. Since the forces are equal but in the opposite direction and each acting on a different body. We distance that the Force is F let's calculate the acceleration of the vehicle and the astronaut  

Astronaut

        F = m_{ast}  a₁

Vehicle

        F = m_{veh} a₁

F = 555.1 m_{ast} a₂

Let's match the equation

m_{ast} a₁ = 155.1 m_{ast} a₂

a₁ = 155.1 a₂

a₁ / a₂ = 155.1

The astronaut's acceleration is 155.1 times the vehicle's acceleration

We see that even when the acceleration of the vehicle is small, there is a very high multiplicative factor.

One method to improve this situation is that the vehicles fear some small retro-rocket vehicles to reduce their acceleration. This would have a very favorable impact on the astronaut's mission.

Another method would be for the astronaut himself to have the retro-rocket and control his acceleration.

4 0
4 years ago
of the kinetic energy of a falling Apple is 5.2J and its Potential energy is 3.5J what is the Mechanical energy
LUCKY_DIMON [66]
     The Mechanical Energy is given by the sum of the all energies of the system.

E_m=E_c+E_p \\ E_m=5.2+3.5 \\ \boxed {E_m=8.7~J}
4 0
3 years ago
What does FCCLA stand for?
professor190 [17]
FCCLA Stands for <span>Family, Career and Community Leaders of America.</span>
6 0
3 years ago
Read 2 more answers
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