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3 years ago

When is an object moving in uniform circular motion?

Physics

2 answers:

zalisa [80]3 years ago

7 0

When its tangential speed is constant

ad-work [718]3 years ago

6 0

When its tangential speed is constant
Although the speed of an object that has a uniform circular motion is constant, its velocity is not constant. Not only that, but it is actually changing constantly.

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Which describes a high frequency wave?

SCORPION-xisa [38]

I think the correct answer from the choices listed above is option A. A high frequency wave is a wave with a low level of energy and a high pitch. Frequency is the number of waves passing per second of time. Hope this answers the question.

8 0

2 years ago

un bus sale de florencia hacia el municipio de san vicente del caguan con una velocidad de 30km/h. 2 horas mas tarde sale otro b

goldenfox [79]

Recuerda que distancia=velocidad x tiempo ( $d=vt$ ). vamos a llamar $d _{1}$ a la distancia que reccore el primer bus, y $d _{2}$ la distancia que recoore el segundo. Los se econtraran cuando la ditancia recorrida por cada bus sea la misma, es decir $d _{1} =d _{2}$ .
Ahora sabemos que la velocidad del primer bus es 30 km/h y su tiempo es $t$ ; en cuanto al segundo bus, su velocidad es 45 km/h y como sale 2 horas mas tarde su tiempo será $t-2$ . Ahora podemos reemplazar los valores en nuestra ecuación de de distanica para hallar el tiempo:
$30t=45(t-2)$
$30t=45t-90$
$30t-45t=-90$
$-15t=-90$
$t= \frac{-90}{-15}$
$t=6$
Los buses se encontraran en 6 horas, 4 horas después de haber salido el segundo bus.

Ahora para hallar la distancia a la que los buses estaran de san vicente del caguan solo necesitaremos reemplazar la el tiempo en nuestra equación de distancia para el primer bus:
 $d _{1} =(30)(6)$
$d _{1} =180$
En el punto de encuentro los buses estarán a 180 km de San Vicente del Caguan.

7 0

2 years ago

What causes the angle of the sun’s rays to change during the year on Earth?

amm1812

The tilt of Earth's axis hope this helps

4 0

3 years ago

A positive charge is moving across a room from south to north. A magnetic field runs from east to west. In what direction is the

liq [111]

Answer:

toward the ceiling

Explanation:

In order to determine the direction of the magnetic force on the charge, we should use the right-hand rule. Putting the thumb, the index finger and the middle finger of the right hand perpendicular to each other, we have: (for a positive charge)

- The index finger corresponds to the direction of motion of the charge (in this case, toward north)

- The middle finger corresponds to the direction of the magnetic field (in this case, towards west)

- The thumb will give us the direction of the magnetic force --> in this case, the thumb points towards the ceiling, so the direction of the magnetic force is towards the ceiling.

4 0

2 years ago

Read 2 more answers

GRAPH INCLUDED PLEASE HELP

swat32

Answer:

10 days

Explanation:

The half-life of a radioactive sample is the time taken for half of the sample to decay.

In the diagram, the half-life corresponds to the time after which the % of cobalt-57 has halved. We can observe the following:

At t=10 days, the % of Co remaining is approximately 45%

At t=20 days, the % of Co remaining is approximately 22%

This means that the sample of cobalt-57 has halved in 10 days, so the half-life of cobalt-57 is 10 days.

5 0

3 years ago