Answer:
Well teapots are metal. If it were plastic, putting it on top of an oven it would melt. And metals are usually shiny.
Explanation:
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The force that holds all these objects together is gravity! :D
The resulting expression for the product of 1.58 and 0.03 is 0.05
The resulting expression for the sum of 1.4 and 2.53 is 3.9
The resulting expression for the sum of 2.34 x 10² and 4.93 is 2.39 x 10²
Given the following expression
(a) 1.58 x 0.03
taking the product
Converting too 1 significant figure
b) 1.4 + 2.53
1.4 = 14/10
2.53 = 253/100
Find their sum
c) 2.34 x 10² + 4.93
Given that
4.93 = 4.93 × 10⁰
Hence;
Learn more about significant figures here:
brainly.com/question/17903415
3.19 x 10^8... hope this helps.
Answer:
Explanation:
Let the velocity of projectile be v and angle of throw be θ.
The projectile takes 5 s to touch the ground during which period it falls vertically by 100 m
considering its vertical displacement
h = - ut +1/2 g t²
100 = - vsinθ x 5 + .5 x 9.8 x 5²
5vsinθ = 222.5
vsinθ = 44.5
It covers 160 horizontally in 5 s
vcosθ x 5 = 160
v cosθ = 32
squaring and adding
v²sin²θ +v² cos²θ = 44.4² + 32²
v² = 1971.36 + 1024
v = 54.73 m /s