Suppose that an asteroid traveling straight toward the center of the earth were to collide with our planet at the equator and bu
1 answer:
You might be interested in
Answer:
Power output, P = 924.15 watts
Explanation:
We have the following parameters:
Length of the ramp, l = 12 m
Weight of the individual, m = 55.8 kg
Incline angle with respect to the horizontal,
Elapsed time, t = 3 s
Let h represent the vertical height of the hill:
h = 5.07 m
Power P required for a person to ascend the hill can be expressed as:
P = 924.15 watts
This indicates that a minimum average power output of 924.15 watts is essential for an individual to ascend this elevation. Thus, this is the answer sought.
Answer:
b) TA = TB = TC
Explanation:
- When the blocks are brought into contact and isolated from the environment, they will exchange heat until they achieve thermal equilibrium.
- During this exchange, the hotter body will lose heat, which will be gained by the cooler body.
- The equilibrium state will be established once this equation is satisfied:
- Substituting the initial temperatures T₀A = 300º C and T₀B = 400ºC, while simplifying for equal block masses mA = mB, enables us to solve for the final temperature, Tfin:
- At equilibrium, when both blocks combine, they will yield a uniform final temperature of 350ºC.
- When block C, also at this temperature, makes contact, all three blocks will simultaneously reflect this final temperature of 350 ºC.
- Therefore, option b) is correct.
Answer:
3.5 cm
Explanation:
mass, m = 50 kg
diameter = 1 mm
radius, r = half the diameter = 0.5 mm = 0.5 x 10^-3 m
L = 11.2 m
Y = 2 x 10^11 Pa
Cross-sectional area of the wire = π r² = 3.14 x 0.5 x 10^-3 x 0.5 x 10^-3
= 7.85 x 10^-7 m^2
Let the change in length of the wire be ΔL.
The equation for Young's modulus is given by
ΔL = 0.035 m = 3.5 cm
Thus, the wire stretches by 3.5 cm.