All categories

3 years ago

HEEEEELLLLPPPPPPPPP pldzzdd

Physics

1 answer:

geniusboy [140]3 years ago

4 0

Answer:

A: 240 watts

Explanation:

Hopefully this helps!

You might be interested in

¿Qué trabajo hace una fuerza de 110 N cuando mueve su punto de aplicación 20 mt en su misma dirección? *

lys-0071 [83]

Answer:

W = 2.200 Joules

Explanation:

Datos (data):

Fuerza [force] (F) = 110 N
Metros [meters] (m) = 20 m
Trabajo [work] (W) = ?

Usar la fórmula (use formula):

$\boxed{\bold{W = F*d}}$

Reemplazar (replace):

$\boxed{\bold{W = 110\ N*20\ m}}$

Resolver la multiplicación, recuerda que 1 N * 1 m = 1 J (resolve the multiplication, remember that 1 N * 1 m = 1 J:

$\boxed{\boxed{\bold{W =2.200\ J}}}$

Greetings.

7 0

3 years ago

For a given initial velocity, how does the time td it takes to stop on dry snow differ from the time tw it takes to stop on wet

salantis [7]

let the friction coefficient on dry ice and wet ice is different and given as

$\mu_d$ = on dry ice

$\mu_w$ = on wet ice

now by friction force formula we can say

$F_f = -\mu mg$

so the deceleration due to friction force is given as

$a = -\mu g$

now the deceleration due to friction force on both surface is given as

$a_1 = -\mu_d * g$

$a_2 = -\mu_w * g$

now the time to stop the two blocks can be calculated by kinematics

$v_f - v_i = a t$

$0 - v_0 = -\mu_d * g * t_d$

$t_d = \frac{v_0}{\mu_d* g}$

also for other block on wet ice we can say similarly

$t_w = \frac{v_0}{\mu_w*g}$

now the ratio of two time on two surfaces is given as

$\frac{t_d}{t_w} = \frac{\mu_w}{\mu_d}$

so this is the ratio of time on two surfaces

7 0

3 years ago

How does a seat belt stop your body from moving in a forward motion in a car?

stiks02 [169]

D, when a moving car suddenly stops, your body is still moving forward until the seatbelt stops you.

When things move, there is always friction. It's what makes cars move in the first place. The inside of the car doesn't move, however the wheels on the car are moving at a rapid pace. When the car stops violently, everything inside the car is thrown. The seat belt acts as a safety precaution if an accident happens.

Mark brainliest?

5 0

3 years ago

Blood contains positive and negative ions and therefore is aconductor. A blood vessel, therefore, can be viewed as anelectrical

CaHeK987 [17]

Answer:

<h2>Magnetic field required for the given induced EMF is 1.41 T</h2>

Explanation:

Potential difference across the blood vessel is given as

$E = vBd$

here we know that the speed is given as

$v = 14.8 cm/s$

$d = 4.80 mm$

$E = 1 mV$

now we have

$1 \times 10^{-3} = (14.8 \times 10^{-2})B(4.80 \times 10^{-3})$

$B = 1.41 T$

Now volume flow rate of the blood is given as

$Q = Av$

$Q = \frac{\pi d^2v}{4}$

from above equation we have

$v = \frac{E}{Bd}$

Now we have

$Q = \frac{\pi d^2\frac{E}{Bd}}{4}$

$Q = \frac{\pi E d}{4B}$

5 0

3 years ago

HELP!

dimaraw [331]

The radiations detected by Arno Penzias and Robert Wilson
were the original heat from the Big Bang.

Today, we call those waves the "Cosmic Microwave Background".

I'm not sure, but I think those guys were awarded a Nobel Prize in Physics
for that discovery.

7 0

3 years ago

Read 2 more answers

HEEEEELLLLPPPPPPPPP pldzzdd​

HEEEEELLLLPPPPPPPPP pldzzdd