3 years ago

PLZZZ HELP ME ASAP!!!! WILL GIVE BRAINLIEST AND EXTRA POINTS!! IM DESPERATE!!

Physics

2 answers:

Law Incorporation [45]3 years ago

7 0

a. Combustion is the answer

umka2103 [35]3 years ago

5 0

Answer:

exothermic

Explanation:

The general equation for an exothermic reaction is: Reactants → Products + Energy. Note: ΔH represents the change in energy. If the energy produced in an exothermic reaction is released as heat, it results in a rise in temperature.

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A constant force of friction 50N is acting on a body of mass 200 Kg moving initially with a speed of 15 m/s. How long does the b

Zina [86]

Answer:

F=-50N

M=200kg

U=15m/s

F=Ma

a=F/M=-50/200=-0.25

V^2-U^2=2aS

0-(15)^2=2(-0.25)S

S=-225/-0.5=450m

V=U+at

0=15-0.25t

t=-15/-0.25=60s

Explanation:

Hope this helps, let me know if you have any questions!

Have a great day.

8 0

4 years ago

Jesse is swinging Miguel in a circle at a tangential speed of 3.50 m/s. If the radius of the circle is 0.600 m and Miguel has a

vovangra [49]

Answer:

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Explanation:

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Then, for our case we have:

$a_c=\frac{v_t^2}{R}=\frac{3.5^2}{0.6}\approx 20.42\,\,\frac{m}{s^2}$

And now we multiply this acceleration by Miguel's mass (11 kg) to obtain the centripetal force acting on him:

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4 0

3 years ago

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A 47-kg packing crate is pulled with constant speed across a rough floor with a rope that is at an angle of 37 degrees above the

levacccp [35]

Tension in the rope due to applied force will be given as

$F = 142 N$

angle of applied force with horizontal is 37 degree

displacement along the floor = 6.1 m

so here we can use the formula of work done

$W = F d cos\theta$

now we can plug in all values above

$W = 142 * 6.1 * cos37$

$W = 691.8 J$

So here work done to pull is given by 691.8 J

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4 years ago

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Lera25 [3.4K]

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