How many arcseconds are in 6 degrees?<br> A) 6<br> B) 360<br> C) 3,600<br> D) 21,600

A mechanic pushes a 2.30 ✕ 103-kg car from rest to a speed of v, doing 4,800 J of work in the process. During this time, the car

Illusion [34]

The horizontal force applied is 160 N while the velocity is 2.03 m/s.

<h3>What is the speed of the car?</h3>

The work done by the car is obtained as the product of the force and the distance;

W = F x

F = ?

x = 30.0 m

W = 4,800 J

F = 4,800 J/30.0 m

F = 160 N

But F = ma

a = F/m

a = 160 N/2.30 ✕ 10^3-kg

a= 0.069 m/s

Now;

v^2 = u^2 + 2as

u = 0/ms because the car started from rest

v = √2as

v = √2 * 0.069 * 30

v = 2.03 m/s

Learn more about force and work:brainly.com/question/758238

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5 0

2 years ago

The name of the group of science that deals with earth and its neighbors in space is called

vfiekz [6]

Astrology is the answer

8 0

3 years ago

Answer them all please

Amanda [17]

Answer:

respiratory = nose

circulatory = heart

digestive = mouth

nervous = brain

5 0

3 years ago

Thermal conductivity of a material is given as 129Btuft–¹ h–¹°F–¹.Calculate this thermal conductivity in Jm–¹s–¹°C–¹(Given: 1Btu

ss7ja [257]

Answer:

223.25 $\text{Jm}^{-1}\text{s}^{-1}^\circ\text{C}^{-1}$

Explanation:

The thermal conductivity of an object is defined as the measure or the ability of the object to transfer heat or conduct heat through its body.

In the context, the thermal conductivity of the material is given as

$=129 \text{ Btu ft}^{-1}\text{h}^{-1}^\circ\text{F}^{-1}$

And it is given that :

1 Btu = 1055 J

1 ft = 0.3048 m

$1^\circ F = \frac{5}{9}^\circ C$

We know that 1 h = 3600 s

So the thermal conductivity of the material in $\text{Jm}^{-1}\text{s}^{-1}^\circ\text{C}^{-1}$ is :

Thermal conductivity :

$=\frac{129 \text{ Btu}}{1 \text{ ft }\times \text{1 h}\times 1^\circ\text{F}}$

$=\frac{129 \times 1055 \text{ J}}{0.3048 \text{ m} \ \times 3600 \text{ s}\ \times \frac{5}{9}^\circ \text{C}}$

= 223.25 $\text{Jm}^{-1}\text{s}^{-1}^\circ\text{C}^{-1}$

3 0

3 years ago

Lightning occurs when there is a flow of electric charge (principally electrons) between the ground and a thundercloud. The maxi

Korolek [52]

Answer:

2C charge will flow from ground and cloud

Explanation:

We have given rate rate of flow of charge $\frac{dq}{dt}=20000C/sec$

Time is given as $t=100\mu sec=100\times 10^{-6}=10^{-4}sec$

WE have to find the how much charge flows between the ground and cloud in this time

So the charge flow is given by $\frac{dq}{dt}\times t=20000C/sec\times 10^{-4}=2C$

So 2C charge will flow from ground and cloud

8 0

3 years ago

How many arcseconds are in 6 degrees? A) 6 B) 360 C) 3,600 D) 21,600