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2 years ago

SP1a. What is the average velocity of a car that travels 30 kilometers due west in 0.50 hour?

Physics

1 answer:

Mila [183]2 years ago

3 0

Answer:

16.67 m/s

Explanation:

$v = \frac{d}{t}$

Change kilometers to meters and hour to seconds

=30000m/1800s

=16.67 m/s

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What is measurement?

stepladder [879]

<span>The current system of units has three standard units: The meter, kilogram, and second. These three units form the mks-system or the metric system. A meter is a unit of length, currently defined as the distance light travels within 1/299782458th of a second. A kilogram is a unit of mass.</span>

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2 years ago

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If the car has a mass of 1,000 kilograms, what is its momentum? (v = 35 m/s).

patriot [66]

Answer:

35000 N

Explanation:

The equation for momentum is

p = m v

Where:

p = momentum

m = mass of object in kg

v = velocity of object

By simply plugging in the numbers into the equation:

1000kg x 35 m/s

You get

35000 N

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1 year ago

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Un péndulo de 4 m de longitud tiene una frecuencia de 5Hz. Calcular la longitud de otro péndulo que en el mismo lugar tiene una

Murrr4er [49]

Conociendo la longitud y frecuencia de un péndulo, queremos encontrar la longitud de otro pendulo de tal forma que tenga otra frecuencia.

Veremos que la longitud del nuevo péndulo debe ser 6.25m

Sabemos que un péndulo de 4m de longitud tiene una frecuencia de 5Hz.

La frecuencia de un péndulo está dada por:

$f = \frac{1}{2*\pi} *\frac{g}{l}$

Donde g es la aceleración gravitatoria y l es la longitud del péndulo, remplazando los datos que tenemos en esa ecuación obtenemos:

$5 Hz = \frac{1}{2*3.14} *\sqrt{\frac{g}{4m} } \\\\(5Hz*2*3.14)^2*4m = g = 3,943.8 m/s^2$

Ahora debemos encontra la longitud de tal forma que la frecuencia sea 4Hz, entonces debemos resolver:

$4Hz = \frac{1}{2*3.14} *\sqrt{ \frac{3943.8m/s^2}{l} }\\\\4hz*2*3.14 = \sqrt{ \frac{3943.8m/s^2}{l} }\\\\l =\frac{3943.8m/s^2}{ (4hz*2*3.14)^2} = 6.25m$

La longitud del nuevo péndulo deve ser 6.25m

Sí quieres aprender más, puedes leer:

brainly.com/question/23483504

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2 years ago

An Iowa class warship holds the record for the fastest warship. If the ship accelerates uniformly from rest at 0.15 m/s² for 2 m

Mumz [18]

The equation to be used is the derived formulas for rectilinear motion at a constant acceleration. The formula for acceleration is

a = (v - v₀)/t
where
v and v₀ are the initial and final velocities, respectively
t is the time
a is the acceleration

Since it started from rest, v₀ = 0. Using the formula:

0.15 m/s² = (v - 0)/[2 minutes*(60 s/1 min)]
Solving for v,
v = 18 m/s

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2 years ago

Two long parallel wires are placed side-by-side on a horizontal table. if the wires carry current in opposite directions,

STatiana [176]

$\vec F = I (\vec L \times \vec B)$

if currents go in opposite directions, wires repel

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2 years ago