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3 years ago

9

Birds almost always migrate

2 answers:

butalik [34]3 years ago

8 0

I believe it is during the day A

Brut [27]3 years ago

4 0

Birds almost always migrate at night.

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In this lab, biology students were directed to use indicators as chemical detection tools, to analyze a variety of foods for the

puteri [66]

<span>The Answer is B: They could use the Benedict's test; it would not have a positive reaction for sucrose but it would for the other three sugars.</span>

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3 years ago

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How are photosynthesis and cellular respiration different?

zaharov [31]

Answer:

photosynthesis is what organisms use to create food and energy. this comes from the sun. and cellular respiration is carbon dioxide that comes from the animal after photosynthesis

Explanation:

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3 years ago

What is the magnitude of the force exerted by the biceps fbiceps? What is the magnitude of the force exerted by the elbow felbow

Slav-nsk [51]

Answer:

<u> </u><u>The magnitude of the force exerted by the biceps </u> $f_b_i_c_e_p_s$ <u> is 218.38N</u>

<u>The magnitude of the force exerted by the elbow </u> $f_e_l_b_o_w$ <u> is 194.37N</u>

Explanation:

Firstly , lets calculate the magnitude of force exerted by biceps $f_b_i_c_e_p_s$ -

Mass of the forearm=

$m_f=1.50kg$

Mass of the ball =

$m_b_a_l_l=950g$

= 0.950kg

so, weight of the forearm=

$w_f=m_f$ g

weight of the ball=

$w_b_a_l_l=m_b_a_l_l$ g

Now , balancing torque about the elbow , we have-

$F_b_i_c_e_p_s\times d_b_i_c_e_p_s= w_f\times\frac{d_b_a_l_l}{2} + w_b_a_l_l\times d_b_a_l_l$

(here , distance of the bicep is 2.50cm = 0.025m and distance of the ball is 36cm= 0.36m)

Now putting the given values in the formula -

$F_b_i_c_e_p_s\times 0.025= 0.95\times9.8\times\frac{0.36}{2} +1.50\times 0.36$

$F_b_i_c_e_p_s=218.38N$

Now, lets calculate the force exerted by elbow $F_e_l_b_o_w$ -

Balancing the vertical forces

$F_b_i_c_e_p_s=F_e_l_b_o_w+w_f+w_b_a_l_l$

$F_e_l_b_o_w = 218.38-(1.00\times9.8)-(0.95\times9.8)$

$F_e_l_b_o_w=194.37N$

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3 years ago

In both mitosis and meiosis, _________ must occur for the process to continue to completion.

Anarel [89]

Chromosome replication must occur for the process to continue.

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3 years ago

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Select all that apply. Plants are used for _____. medicine lumber fuel clothes tires disinfectants paper

Arte-miy333 [17]

Not sure about disinfectant and we can't count on tires i guess so the answers are:
medicine
fuel
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paper
lumber

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3 years ago

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