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ra1l [238]
3 years ago
8

Directions: I answer all the questions listed below.

Physics
2 answers:
Softa [21]3 years ago
6 0

Answer:

<u>10</u> is the compression ratio of an engine that has a swept volume of 450cm3 and a clearance volume of 50cm3.

Explanation:

determine the compression ratio using

\frac{vd + vc}{vc} =  \frac{450 + 50}{50}

anzhelika [568]3 years ago
5 0

Answer:

The compression ratio is 10

Explanation:

Given

V_d = 450cm^3 --- swept volume

V_c = 50cm^3 --- compression volume

Required

Determine the compression ratio (CR)

This is calculated as:

CR = \frac{V_d + V_c}{V_c}

CR = \frac{450+50}{50}

CR = \frac{500}{50}

CR = 10

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Scorpion4ik [409]

Kate's recollection of these different events along her life best exemplifies the use of her episodic memory.

<h3>What is episodic memory?</h3>

The term episodic memory makes reference to conscious personal background experiences that were collected along life.

Episodic memory is also defined as the collection of all life-day experiences collected by a person.

The episodic memory may be, for example, the first day when a person drove his/her car or a bike.

Learn more about episodic memory here:

brainly.com/question/25040884

3 0
3 years ago
Dos cargas iguales de 10^-7C estan separadas por una distancia de 2m. calcule la fuerza con que se repelen
m_a_m_a [10]

Answer:

F=2.25\times 10^{-5}\ N

Explanation:

According to question,

Charge 1 and charge 2 are 10^{-7}\ C

The distance between charges is 2 m

We need to find the force with which two positive charges repel. It is called electrostatic force of repulsion. It can be given by :

F=\dfrac{kq^2}{r^2}\\\\F=\dfrac{9\times 10^9\times (10^{-7})^2}{2^2}\\\\F=2.25\times 10^{-5}\ N

So, the electric force of repulsion is 2.25\times 10^{-5}\ N.

8 0
3 years ago
A gun with a muzzle velocity of 100 m/s is fired horizontally from a tower. Neglecting air resistance, how far downrange will th
Neporo4naja [7]

Answer:

313.6 m downward

Explanation:

The distance covered by the bullet along the vertical direction can be calculated by using the equation of motion of a projectile along the y-axis.

In fact, we have:

y(t) = h +u_y t + \frac{1}{2}at^2

where

y(t) is the vertical position of the projectile at time t

h is the initial height of the projectile

u_y = 0 is the initial vertical velocity of the projectile, which is zero since the bullet is fired horizontally

t is the time

a = g = -9.8 m/s^2 is the acceleration due to gravity

We can rewrite the equation as

y(t)-h = \frac{1}{2}gt^2

where the term on the left, y(t)-h, represents the vertical displacement of the bullet. Substituting numbers and t = 8 s, we  find

y(t)-h= \frac{1}{2}(-9.8)(8)^2 = -313.6 m

So the bullet has travelled 313.6 m downward.

6 0
3 years ago
A speeder is pulling directly away and increasing his distance from a police car that is moving at 24 m/s with respect to the gr
iogann1982 [59]
2,062,305 2,062,305 <span>2,062,305</span>
8 0
3 years ago
Plastic and glass rods that have been charged by rubbing with wool and silk, respectively, hang by threads.
nikitadnepr [17]

Answer:

a. The object will attract the glass rod.

b. The object will repel the glass rod.

Explanation:

a. When you rub a plastic rod with wool, it becomes negatively charged. This is because the wool material loses some of its electrons to the plastic rod. The wool becomes positively charged while the plastic rod becomes negatively charged.

Hence, for an object to repel the negatively charged plastic rod, it must also be negatively charged. This is because objects with like charges repel one another.

On the other hand, when you rub a glass rod with a silk material, it becomes positively charged. This is because the glass rod loses its electrons to the silk material. The silk material then becomes negatively charged, while the glass rod becomes positively charged.

Therefore, the negatively charged object will attract the already positively charged glass rod.

b. For an object to attract a negatively charged plastic rod, then it must be positively charged, since unlike charges attract.

So, a positively charged object will repel the negatively charged glass rod.

7 0
3 years ago
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