Answer:
F = M a fundamental Newton's equation
F = 3 kg * 3 m/s^2 = 9 kg m / s^2 = 9 Newtons
<span>(a)
Taking the angle of the pitch, 37.5°, and the particle's initial velocity, 18.0 ms^-1, we get:
18.0*cos37.5 = v_x = 14.28 ms^-1, the projectile's horizontal component.
(b)
To much the same end do we derive the vertical component:
18.0*sin37.5 = v_y = 10.96 ms^-1
Which we then divide by acceleration, a_y, to derive the time till maximal displacement,
10.96/9.8 = 1.12 s
Finally, doubling this value should yield the particle's total time with r_y > 0
<span>2.24 s
I hope my answer has come to your help. Thank you for posting your question here in Brainly.
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Answer:
n = 3.26
Explanation:
given,
human need 380 W of power to walking 5 Km/hr
human body 380 J of energy per second for walking 5 Km/h
speed of human 5 x 0.278 = 1.39 m/s
for walking 1.39 m energy required = 380 J
distance traveled in 3 hours of walking
d = 1.39 x 3 x 3600
d = 15012 m
energy needed
E = 4,104,000 J
now,
one pizza slice give 1260000 J pf energy
slice of pizza
n = 3.26
Explanation:
Yes, it takes more energy to vaporize 1 kg of saturated liquid water at than it would at .
First we need to know the specific heat capacity of water. You can look it up online because it is uniform. The specific heat capacity of water is 4184 kg^-1 °C^-1.
To calculate the energy required to heat a specific thing up, we can use the formula
E = mc△T
Where E is the total energy required, m as mass, c as specific heat capacity and △T
Substitute the numbers in
E = 1 x 4184 x 5
E = 20920J
Therefore the answer is 20920 joules