The shape of the snowflake is determined broadly by the temperature and humidity at which it is formed. Rarely, at a temperature of around −2 °C (28 °F), snowflakes can form in threefold symmetry — triangular snowflakes. Most snow particles are irregular in form, despite their common depiction as symmetrical.
Answer:
m = 84.66 kg
Explanation:
given,
tightrope walker across = 30 m
displacement vertically downward = 1 m
force at center = 6250 N
m = 84.66 kg
hence, the mass of the tightrope walker m = 84.66 kg
Answer:
σ = 4.1 MPa
Explanation:
Given that
m= 2.5 kg
v= 32 km.hr
v= 8.88 m/s
The kinetic energy of the mass ,KE
KE = mv²/2
KE = 2.5 x 8.88²/2
KE= 98.56 J -------1
The strain energy of the string
----2
KE= E
σ = 4.1 MPa
<span>Answer:
F = ma
Fx = max
WHERE:
Fx = forces in the x direction
m = mass
ax = acceleration in the x direction
If we look at the figure, there are only two forces in the x direction. The first force is the x component force 4.0 N acting to the right, denoted as +4.0 N. The second force is the 2.0 N force acting to the left, denoted as -2.0 N.
Fx = max
4.0 N - 2.0 N = (7.8 kg)*ax
2.0 N = (7.8 kg)*ax
ax = 0.25641 m/s^2
Because the question is asking you to write it to two significant figures,
==>ax = 0.26 m/s^2</span>