brad rides his bike 20 km . he covers the distance in 45 minutes (0.75 hours) what is his speed in kilometers per hours ? a. 44 km/hr b. 15 km/hr c. 9.0 km/hr d. 27 km/hr
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Can somebody please explain to me how the acceleration in simple hormonic motion is proportional to the displacement..
A gyre is a set of currents that form:a. a line b. a loop c. weather d. climate zones
How is 1 hectoliter different from 1 kiloliter?
NEED ASAP PLEASE !!! Suppose that a block is pulled 16 meters across a floor. What amount of work is done if the force used to drag the block is 22 N? A. 200 J B. 330 J C. 352 J D. 220 J
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Answer:
if the friction was removed from the ramp, the acceleration would drasticly increase, making it hard to stop.
Explanation:
b. It is divided into a pair of fives.
c. It has a stressed syllable followed by an unstressed syllable.
d. It is present in both Italian sonnets and Shakespearean sonnets.
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b). No. This choice doesn't mean anything.
c). No. This is the description of a trochee, not an iamb.
d). I don't know anything about Italian sonnets. But I do know that
Shakespeare used iambic pentameter, and the other choices have
been eliminated, so I'll go with this one. (the "multiple-guess" method)
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Let's use Newton's 2nd law of motion:
Force = (mass) x (acceleration)
Force = (68 kg) x (1.2 m/s²) = 81.6 newtons .
68*1.2=81.6
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Answer:
Give any one cultural practice
period of 1.262 Earth days and an orbital radius of 2.346 x 104
km. The second moon has an orbital
radius of 9.378 x 103 km.
What is the orbital period of the second moon?
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same central body, the ratio of (orbital period squared) / (orbital radius cubed)
is the same number.
Moon #1: (1.262 days)² / (2.346 x 10^4 km)³
Moon #2: (orbital period)² / (9.378 x 10^3 km)³
If Kepler knew what he was talking about ... and Newton showed that he did ...
then these two fractions are equal, and may be written as a proportion.
Cross multiply the proportion:
(orbital period)² x (2.346 x 10^4)³ = (1.262 days)² x (9.378 x 10^3)³
Divide each side by (2.346 x 10^4)³:
(Orbital period)² = (1.262 days)² x (9.378 x 10^3 km)³ / (2.346 x 10^4 km)³
= 0.1017 day²
Orbital period = 0.319 Earth day = about 7.6 hours.
B. summer
C. fall
D. also winter
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Answer:
B. summer
Explanation:
United States is in Northern hemisphere and Argentina is in southern hemisphere. Seasons occur on Earth due to the inclination of the axis of rotation. The hemisphere which faces towards sun has summer and the other would point away would have winter.
Thus, when United States would have Winter, it would be Summer in Argentina.