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3 years ago

Which one is it?????

Physics

2 answers:

antoniya [11.8K]3 years ago

5 0

Answer:ummm

Explanation:

masss

EastWind [94]3 years ago

4 0

Answer:

see below

Explanation:

mass divided by the net force of an object

The formula for calculating weight is F = m × 9.8 m/s2, where F is the object's weight in Newtons (N) and m is the object's mass in kilograms.

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7. A scientist studying a squid observes that the squid at rest

Rzqust [24]

The average force on the squid during the ejection of 0.60 kg of water at a velocity of 15.0 m/s in 0.15 seconds is 60 N.

We can calculate the average force with the average acceleration as follows:

$F = m\overline{a}$ (1)

Where:

m: is the mass of water = 0.60 kg

$\overline{a}$ : is the average acceleration

The <em>average acceleration</em> is given by the change of velocity in an interval of time

$\overline{a} = \frac{v_{f} - v_{i}}{t_{f} - t_{i}}$ (2)

Where:

$v_{i}$ : is the initial velocity = 0 (the squid is at rest)

$v_{f}$ : is the final velocity = 15.0 m/s

$t_{i}$ : is the initial time = 0

$t_{f}$ : is the final time = 0.15 s

Now we can find the <em>average force</em> after entering equation (2) into (1)

$F = m(\frac{v_{f} - v_{i}}{t_{f} - t_{i}}) = 0.60 kg(\frac{15.0 m/s - 0}{0.15 s}) = 60 N$

Therefore, the average force on the squid during the propulsion is 60 N.

Find more about average force here:

brainly.com/question/20902034

brainly.com/question/12916904

I hope it helps you!

3 0

3 years ago

In uniform circular motion, how does the acceleration change when the speed is increased by a factor of 3? When the radius is de

crimeas [40]

Answer:

The acceleration will become 9/2 times.

a' =9/2 a

Explanation:

We know that acceleration of a particle when it is moving in the circular path is given as

$a=\omega^2\ r$

r=radius

ω= angular speed

If the speed ω '= 3 ω

If the radius , $r'=\dfrac{r}{2}$

The final acceleration =a'

$a'=\omega^2'\ r'$

$a'=(3\omega)^2\times \dfrac{r}{2}$

$a'=9\omega^2\times \dfrac{r}{2}$

$a'=\omega^2\times \dfrac{9r}{2}$

$a'= \dfrac{9r}{2}\times \omega^2\times r$

$a'=\dfrac{9}{2}a$

Therefore the acceleration will become 9/2 times.

5 0

3 years ago

Starting from home, you bicycle 25 km north in 2.4 h and then turn around and pedal straight home in 1.4 h . What are your (a) d

AnnZ [28]

Answer:

Part a)

$d = 25 km$

Part b)

$v_{avg} = 10.42 km/h$

Part c)

$v_{avg} = 17.86 km/h$

Part d)

Displacement for entire trip = 0

Part e)

Average velocity for entire trip will be zero

Explanation:

Part a)

Displacement after t = 2.4 hours is the straight line distance between initial and final positions

so we have

$d = 25 km$

Part b)

Average velocity is defined as

$v_{avg} = \frac{displacement}{time}$

$v_{avg} = \frac{25 km}{2.4 h}$

$v_{avg} = 10.42 km/h$

Part c)

During his return journey the displacement will be same

$displacement = 25 km$

$time = 1.4 h$

so average velocity is defined as

$v_{avg} = \frac{25 km}{1.4 h}$

$v_{avg} = 17.86 km/h$

Part d)

Displacement for entire trip = 0

as initial and final position will be same

Part e)

Average velocity for entire trip will be zero

6 0

3 years ago

Light hits a flat white wall. Which of the following choices correctly describes the interaction between light and the wall?

Sliva [168]

C) Some of the light's energy is absorbed by the wall, and some of the light is reflected in different directions

3 0

4 years ago

I need help with 03.01 Playing With Others – President's Challenge Goals

galben [10]

Answer:

is this like a book orsomthing

Explanation:

4 0

2 years ago