3 years ago

I need help with question one and question two

Physics

1 answer:

diamong [38]3 years ago

6 0

CH4(g) + 2 O2 (g)---> CO2(g) + 2 H2O (g)

2) PbCl2 (aq) + Na2CrO4 (aq) --> PbCrO4 (s) + NaCl (aq)

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Which of these statements best describes the difference between electromagnetic and gravitational forces in the solar system?

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Read 2 more answers

Design an inverting amplifier that has a gain of -47 (this gain is negative). Pick resistor values that you have in the lab kit.

Nostrana [21]

Answer:

R2= 470 ohms R1= 10ohms. Schematic is attached

Explanation:

Av=-(R2/R1)

-47=-(470/10)

-47=-47

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3 years ago

A wheel has a rotational inertia of 16 kgm2. Over an interval of 2.0 s its angular velocity increases from 7.0 rad/s to 9.0 rad/

german

Answer:

<h2>128.61 Watts</h2>

Explanation:

Average power done by the torque is expressed as the ratio of the workdone by the toque to time.

Power = Workdone by torque/time

Workdone by the torque = $\tau \theta$ = $I\alpha * \theta$

I is the rotational inertia = 16kgm²

$\theta = angular\ displacement$

$\theta = 2 rev = 12.56 rad$

$\alpha \ is \ the\ angular\ acceleration$

To get the angular acceleration, we will use the formula;

$\alpha = \frac{\omega_f^2- \omega_i^2}{2\theta}$

$\alpha = \frac{9.0^2- 7.0^2}{2(12.54)}\\\alpha = 1.28\ rad/s^{2}$

Workdone by the torque = 16 * 1.28 * 12.56

Workdone by the torque = 257.23 Joules

Average power done by the torque = Workdone by torque/time

= 257.23/2.0

= 128.61 Watts

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3 years ago

If the same amount of force was applied to an object that was twice the mass,

Olegator [25]

Answer:

the object with greater mass will experience a smaller acceleration and the object with less mass will experience a greater acceleration.

Explanation:

According to Newton's second law, when the same force is applied to two objects of different masses, the two objects will change mass.

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3 years ago