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andreyandreev [35.5K]
3 years ago
13

A 3.0-kg block moves up a 40o incline with constant speed under the action of a 26-N force acting up and parallel to the incline

. What magnitude force must act up and parallel to the incline for the block to move down the incline at constant velocity?
Physics
1 answer:
CaHeK987 [17]3 years ago
3 0

Answer:

it is very hard question for me sorry i cant solve it

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1.what is gravity?(in your own words)
olga_2 [115]

Answer:

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That keeps the planet moving in an orbit around the sun

hope it helped:)

8 0
2 years ago
A car travels 15 kilometers west in 10 minutes. After reaching the destination, the car travels back to the starting point, agai
jeka94

Speed = (distance traveled) / (time to travel the distance).
 
Strange as it may seem, 'velocity' is completely different. 

Velocity doesn't involve the total distance traveled at all. 
Instead, 'velocity' is based on 'displacement' ... the distance
between the start-point and end-point, regardless of the route
taken to get there.  So the displacement in driving once around
any closed path is zero, because you end up where you started. 

Velocity =

           (displacement during some time)
divided by
            (time for the displacement)

AND the direction from the start-point to the end-point.


For the guy who drove 15 km to his destination in 10 min, and then
back to his starting point in 5 min, (assuming he returned by way of
the same 15-km route):

         Speed = (15km + 15km) / (10min + 5min)  =  (30/15) (km/min)

                                                                                 =  2 km/min.

        Velocity = (end location - start position) / (15 min)  =  Zero .

5 0
3 years ago
(a) A submarine descends to a depth of 70 m below the surface of water. The density of the water is 1050 kg/m3. Atmospheric pres
timurjin [86]

Answer:

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5 0
2 years ago
You have a 78.7 mF capacitor initially charged to a potential difference of 11.5 V. You discharge the capacitor through a 3.03 Ω
Aloiza [94]

Answer:

\tau=0.23\;second

Explanation:

Given,

C=78.7\;mF\\V=11.5\;V\\R=3.03\;\Omega\\

Time constant

\tau=RC\\\tau=78.7\times10^{-3}\times3.03\\\tau=238.461\times10^{-3}\;second\\\tau=0.23\;second

8 0
3 years ago
4.6 billion years ago, the Earth is created from what
Musya8 [376]

Answer:

4.6 billion years ago the earth was made of gas and dust that was orbiting the newly forming Sun.

Explanation:

7 0
2 years ago
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