I think it’s B because we aren’t looking for Vf
        
                    
             
        
        
        
Answer:
t = 0.657 s
Explanation:
given,
initial vertical velocity = 7.5 m/s
initial horizontal velocity = 0 m/s
angle = 49◦
using kinetic equation
final velocity in vertical direction
v sinθ    = u_y   - gt ........................(1)
final velocity in horizontal direction
v cosθ = u_x   + a_x × t
here   u_x = 0.0 m/s
v cosθ = a_x×t ......................(2)
Dividing equation (1) / (2)

solving for time t

u_y   =   initial velocity along x direction
acceleration along a_x = 1.4 m/s²
g = acceleration due to gravity   = 9.8 m/s²
θ = 43° ,   u_y   =  7.5 m/s    

t = 0.657 s
time taken by the particle is t = 0.657 s
 
        
             
        
        
        
The correct answer is A. He created a way of naming organisms based on genus and species
Explanation:
Carl Linnaeus created a simple but precise system for naming organisms of any species and kind. This system was known as binomial nomenclature and the names of organisms depend on two main elements: the genus and the species. The first element is a broad category that covers species with a common origin, and the second one is the species, which describes organisms that can reproduce and share many common features including DNA sequence. According to this, the correct answer is A.
 
        
             
        
        
        
Heat can be reduced but it cannot be eliminated completely there is some amount if heat energy present even if it is absolute zero(-273degrees Celsius)
        
                    
             
        
        
        
The amplitude of the electromagnetic waves coming from 
a light bulb is exactly an indication of the energy carried by 
the waves.  
If their amplitude decreases, then the waves are carrying less 
energy.  The brightness of the light decreases, AND the bulb 
runs cooler, because it produces less heat.