Answer:20°
Explanation:
Recall
Range R of a projectile is given by U^2sin2A/g
We're U = velocity,A= angle of projection and g is acceleration due to gravity
From the question the range R are the same
Hence R1=R2
U1^2sin2A/g=U2^2sin2B/g
But U1=U2 and g=g
Hence sin2A=sin 2B
Sin 2*70= sin2*B
0.6427=sin2B
B=sin inverse(0.6427)=40/2=20°
The combined
gas law does not account for changes in power. The combined gas law has no official founder; it is simply
the incorporation of the three laws that was discovered. The combined gas law
is a gas law that combines Gay-Lussac’s Law, Boyle’s Law and Charle’s Law. Boyle’s law states that pressure is inversely
proportional with volume at constant temperature. Charle’s law states that
volume is directly proportional with temperature at constant pressure. And
Gay-Lussac’s law shows that pressure is directly proportional with temperature
at constant volume. The combination of these laws known now as combined gas law
gives the ratio between the product of pressure-volume and the temperature of
the system is constant. Which gives PV/T=k(constant). When comparing a
substance under different conditions, the combined gas law becomes P1V1/T1 =
P2V2/T2.
All elements are balanced. There are 1 Mg, 1 O, 2 Li's and 2 Cl's.
Answer:
C
Explanation:
The answer is C cause ... look at the file I added! Plz mark as brainlest! PASS THE TEST OR ASSIGNMNETT!
Answer:
24.75(4sf)
Explanation:
Do SUVAT for the vertical journey, from the start to the maximum height, in order to find the vertical speed at the start. Use the formula v²=u²+2as where v=0, s=25m, a= -9.8 and u=x. Now find x using the formula above. Then use the formula, v=u+at to find t( fir half the journey). Once t is found, double this answer to find the time taken to reach the whole. now do the horizontal journey to find the horizontal speed. Use s=ut where s=50m, t= the answer you found before, and u=y. now find xly and square it, then add it to the square of x. Then root them bkth to find the answer to the whple question.
