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o-na [289]
2 years ago
14

HELP PLEASE USE KINEMATIC EQUATIONS!!!

Physics
1 answer:
DaniilM [7]2 years ago
4 0

Answer:

ans is 16.66sec time is taken by runner

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what distance is a book from the floor if the book contains 196 joules f potential energy and has a mass of 5 kg?
AleksAgata [21]
E=mgh.   196=5kg*9.81m/s^2*h.  So h=196/(5*9.81)=4m
5 0
3 years ago
A new planet is discovered beyond Pluto at a mean distance to the sun of 4004 million miles. Using Kepler's third law, determine
AVprozaik [17]

Answer:

103239.89 days

Explanation:

Kepler's third law states that the square of the orbital period of a planet is directly proportional to the cube of the semi-major axis of its orbit.

                               a³ / T² = 7.496 × 10⁻⁶  (a.u.³/days²)

where,

a is the distance of the semi-major axis in a.u

T is the orbit time in days

Converting the mean distance of the new planet to astronomical unit (a.u.)

                       1 a.u = 9.296 × 10⁷ miles        

                                      \frac{4004 * 10^{6}}{9.296 * 10^{7}}  =  43.07\ a.u.

Substituting the values into Kepler's third law equation;

                                    \frac{(43.07)^{3}}{T^{2}}  =  7.496 * 10^{-6}  

                                    T^{2} = \frac{(43.07)^{3}}{7.496 * 10^{-6}} (days)²

                                    T^{2} = \sqrt{\frac{(43.07)^{3}}{7.496 * 10^{-6}}}

                                    T = 103239.89 days

An estimate time T for the new planet to travel around the sun in an orbit is 103239.89 days

7 0
3 years ago
A load of 36 N attached to a spring hanging
givi [52]

Answer:

The required force is 55.38 N.

Explanation:

First we have to find the spring constant K;

                         k = \frac{mg}{d} = \frac{36}{0.065} = 553.846 N/m

As,

                         F= -Kx

                   or, F=  - 553.846 × 0.10

                   or, F=  -55.3846 N

Hence,

                  F_{needed} = - F_{spring}

            ∴  F_{needed} = 55.38 N

The required force  to stretch it by this  amount is 55.38 N.  

3 0
3 years ago
A crate is to be pulled across the floor. The crate will experience a force of friction of 34 N. You pull on the crate with a fo
Jobisdone [24]
The net force would be 75N - 34N = 41N

The crates rate of acceleration would be 41N=8.5*a so a = 4.8m/s^2
6 0
3 years ago
Which feature is located nearest a continent
mafiozo [28]
The submarine canyon is the feature located nearest the continent. The Submarine canyon is any class of narrow steep-sided valley that cuts into the continental slope and continental rises of the oceans, it is sometimes extending well into the continental shelf, have a nearly vertical walls, and occasionally have a canyon wall heights of up to 5km, from canyon floor to the canyon rim, as with the Great Bahama Canyon. A submarine canyon originates either on the continental shelf or within the continental slopes. The submarine canyon is the main pathways by which the material such as stones and sand reach the deep sea. 
8 0
3 years ago
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