Compared with a force, a torque involves

A bullet with a mass of 0.00658 kg is fired through a 1.95 kg block of wood on a frictionless surface. The initial speed of the

Svetradugi [14.3K]

The final velocity of the block is 1.29 m/s

Explanation:

We can solve this problem by using the principle of conservation of momentum: in fact, the total momentum of the system must be conserved before and after the collision. Therefore, we can write:

$p_i = p_f\\m_1 u_1 + m_2 u_2 = m_1 v_1 + m_2 v_2$

where:

$m_1 = 0.00658 kg$ is the mass of the bullet

$u_1 = 822 m/s$ is the initial velocity of the bullet

$v_1 = 439 m/s$ is the final velocity of the bullet

$m_2 = 1.95 kg$ is the mass of the block

$u_2 = 0$ is the initial velocity of the block

$v_2$ is the final velocity of the block

Re-arranging the equation and solving for v2, we find:

$v_2 = \frac{m_1 u_1 - m_1 v_1}{m_2}=\frac{(0.00658)(822)-(0.00658)(439)}{1.95}=1.29 m/s$

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5 0

3 years ago

Select the correct answer what is meditation

german

Answer:

Meditation can be defined as a set of techniques that are intended to encourage a heightened state of awareness and focused attention. Meditation is also a consciousness-changing technique that has been shown to have a wide number of benefits on psychological well-being.

3 0

2 years ago

Why cant soy sauce freeze

juin [17]

The salt content in soy

8 0

3 years ago

Read 2 more answers

Sandra wanted to see how fast she could kick a soccer ball. She recorded her results below. Unfortunately, she forgot to record

alexira [117]

Kick | Distance (M) | Time (s) | Average Speed

1. 55. 5.0. 11

2. 50. 5.0. 10

3. 20. 3.0. 10

5 0

2 years ago

An alternating current is supplied to an electronic component with a warning that the voltage across it should never exceed 13 V

MrMuchimi

Answer:

9.2 V

Explanation:

The RMS value of an AC is the effective value of a varying voltage or current in DC, that is the equivalent value of the AC which produces the same effect as an DC. For example if a motor is supplied by a 9V RMS voltage, it will rotate as if the voltage applied was 9V DC.

The RMS value is given by:

RMS voltage = Peak voltage * 1/√2

Given that the maximum voltage should not exceed 13 V, this means that the peak voltage is 13 V. The maximum RMS voltage is:

RMS voltage = Peak voltage * 1/√2 = 13 * 1/√2 = 9.2 V

4 0

3 years ago