Someone help me plz

Physics

1 answer:

vagabundo [1.1K]3 years ago

4 0

Answer:

Aerobic exercise includes?

(C) All activities that make you tired and short of breathe.

2. Which choice is an intense exercise that involve short burst of activity in which the muscles worked so hard that they produce energy without using energy?

(B) anaerobic exercise

Explanation:

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4 years ago

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$\color{Blue}\huge\boxed{Answer}$

<em>The potential environmental impacts associated with solar power—land use and habitat loss, water use, and the use of hazardous materials in manufacturing—can vary greatly depending on the technology, which includes two broad categories: photovoltaic (PV) solar cells or concentrating solar thermal plants (CSP).</em>

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I just answer the second question

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3 years ago

An artillery shell is fired with an initial velocity of 300 m/s at 55.0° above the horizontal. It explodes on a mountainside 42.

GuDViN [60]

Answer:

x=7227

y=1678

(7227,1678)

Explanation:

Ok, check the picture I attached you, because of the problem don't give us aditional information, let's asume that the projectile is fired from an initial position x=0 and y=0. Now let's use projectile motion equations, but firs let's find the initial velocity components in x-axis and y-axis:

$v_ox=v_o*cos(\theta_o)=300*cos(55)=172.0729309m/s$