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valentinak56 [21]

3 years ago

6

Why will a sheet of paper fall slower than one that is crumbled into a ball

2 answers:

damaskus [11]3 years ago

6 0

Answer:

because a crumbled ball is a less surface

Explanation:

Zarrin [17]3 years ago

4 0

It’s coming in contact with more air molecules than I would if it was in a ball because there is less surface area

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In which direction does the electric field point at a position directly ((north))of a

Veseljchak [2.6K]

B. North, was the correct answer

5 0

3 years ago

The height of a helicopter above the ground is given by h = 2.80t3, where h is in meters and t is in seconds. At t = 1.55 s, the

PSYCHO15rus [73]

H = 2.80t^3

h = 2.80 (1.55)^3 = 10.43

10.43 = 1/2 gt^2

10.43 x 2/9.8 = t^2

t = √2.12

= 1.45

Hope this helps

6 0

3 years ago

Read 2 more answers

g a small smetal sphere, carrying a net charge is held stationarry. what is the speed are 0.4 m apart

weeeeeb [17]

Complete Question

A small metal sphere, carrying a net charge q1=−2μC, is held in a stationary position by insulating supports. A second small metal sphere, with a net charge of q2= -8μC and mass 1.50g, is projected toward q1. When the two spheres are 0.80m apart, q2 is moving toward q1 with speed 20ms−1. Assume that the two spheres can be treated as point charges. You can ignore the force of gravity.The speed of q2 when the spheres are 0.400m apart is.

Answer:

The value $v_2 = 4 \sqrt{10} \ m/s$

Explanation:

From the question we are told that

The charge on the first sphere is $q_1 = 2\mu C = 2*10^{-6} \ C$

The charge on the second sphere is $q_2 = 8 \mu C = 8*10^{-6} \ C$

The mass of the second charge is $m = 1.50 \ g = 1.50 *10^{-3} \ kg$

The distance apart is $d = 0.4 \ m$

The speed of the second sphere is $v_1 = 20 \ ms^{-1}$

Generally the total energy possessed by when $q_2$ and $q_1$ are separated by $0.8 \ m$ is mathematically represented

$Q = KE + U$

Here KE is the kinetic energy which is mathematically represented as

$KE = \frac{1 }{2} m (v_1)^2$

substituting value

$KE = \frac{1 }{2} * ( 1.50 *10^{-3}) (20 )^2$

$KE = 0.3 \ J$

And U is the potential energy which is mathematically represented as

$U = \frac{k * q_1 * q_2 }{d }$

substituting values

$U = \frac{9*10^9 * 2*10^{-6} * 8*10^{-6} }{0.8 }$

$U = 0.18 \ J$

So

$Q = 0.3 + 0.18$

$Q = 0.48 \ J$

Generally the total energy possessed by when $q_2$ and $q_1$ are separated by $0.4 \ m$ is mathematically represented

$Q_f = KE_f + U_f$

Here $KE_f$ is the kinetic energy which is mathematically represented as

$KE_f = \frac{1 }{2} m (v_2^2$

substituting value

$KE_f = \frac{1 }{2} * ( 1.50 *10^{-3}) (v_2 )^2$

$KE_f = 7.50 *10^{ -4} (v_2 )^2$

And $U_f$ is the potential energy which is mathematically represented as

$U_f = \frac{k * q_1 * q_2 }{d }$

substituting values

$U_f = \frac{9*10^9 * 2*10^{-6} * 8*10^{-6} }{0.4 }$

$U_f = 0.36 \ J$

From the law of energy conservation

$Q = Q_f$

So

$0.48 = 0.36 +(7.50 *10^{-4} v_2^2)$

$v_2 = 4 \sqrt{10} \ m/s$

6 0

3 years ago

Peter starts out from a restaurant traveling at 24 mph. Alex leaves the restaurant 15 minutes later, traveling at 36 mph in the

salantis [7]

Answer:

(a): Will take 0.5 hours to Alex pass Peter.

(b): They will be 18 miles away from the restaurant.

Explanation:

d= 24 mh * 0.25 min

d= 6 miles

t= 6 miles / (36mph - 24mph)

t= 0.5 hours (a)

x= 36 mph * t

x= 36mph * 0.5 hr

x= 18 miles (b)

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4 years ago

Which of the following is not a latent heat gain source

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The pathway for you to be able is in your room you need

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2 years ago