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3 years ago

Which objects represents a negatively charged particle?

Physics

2 answers:

Darya [45]3 years ago

6 0

Answer:

Explanation:

This is the correct order on edge

denis-greek [22]3 years ago

3 0

Answer: B,A,C,C

Explanation:

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A fighter-bomber is making a bombing run flying horizontally at 500 knots (100 m/s). At an altitude of 100 m. a. How long will i

DanielleElmas [232]

Answer:

$5\:\mathrm {s}$

Explanation:

We can use kinematics equation $\Delta y={v_i}t+\frac{1}{2}at^2$ to solve this problem. Since $v_i$ in the vertical direction is $0$ , we have:

$\Delta y =\frac{1}{2}at^2$ (freefall equation)

Plugging in values, we get:

$100=\frac{1}{2}\cdot 9.81\cdot t^2,\\\\t^2=\frac{100}{\frac{1}{2}\cdot 9.81},\\\\t=\sqrt{20.387}\\\\t=4.515\approx \fbox{$5\:\mathrm{seconds}$}$ (one significant figure).

*The horizontal velocity is irrelevant in this question. It only affects the horizontal displacement of the object (where the object lands), not how long it takes for the object to hit the ground.

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3 years ago

What is haudralic pressure

Neko [114]

Answer:

Hydraulic pressure is the pressure of hydraulic fluid which it exerts in all direction of vessel,hose or anything in which it is supposed to exert the force per unit area. This pressure is responsible to create a flow in a hydraulic system as fluid flows from high pressure to low pressure . Thus energy is transferred in a hydraulic system through a fluid medium.

Explanation:

6 0

3 years ago

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What equation is used to calculate momentum

Dmitrij [34]

Answer:

p = m v

Explanation:

You can see from the equation that momentum is directly proportional to the object's mass (m) and velocity (v). Therefore, the greater an object's mass or the greater its velocity, the greater its momentum. A large, fast-moving object has greater momentum than a smaller, slower object.

6 0

3 years ago

A circuit has a current of 3 amps and is using a 9 volt battery. The circuit has a resistance of ____

leonid [27]

Answer:

so 9/3=3 current is 3 amperes

Explanation:

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3 years ago

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Calculate the ratio of the resistance of 12.0 m of aluminum wire 2.5 mm in diameter, to 30.0 m of copper wire 1.6 mm in diameter

alukav5142 [94]

Answer: 0.258

Explanation:

The resistance $R$ of a wire is calculated by the following formula:

$R=\rho\frac{l}{s}$ (1)

Where:

$\rho$ is the resistivity of the material the wire is made of. For aluminium is $\rho_{Al}=2.65(10)^{-8}m\Omega$ and for copper is $\rho_{Cu}=1.68(10)^{-8}m\Omega$