Answer:
Car is travelling with 30 m/h.
By unitary method,
1 hour = 30 m
2 hours = 2 × 30 m
Thus car will travel 60 m in 2 hours.
pls give brainliest for the answer
Density can be calculated using the following rule:
density = mass/volume
plug the given mass and volume into the equation to calculate thr density:
density=57/4.2 = 13.57 g/cm^3
Answer:
House A requires heat at a slightest faster rate than B
Explanation:
House A requires heat at a slightest faster rate than B due to the slight high temperature the furnace A is.
Answer:

Explanation:
From the question we are told that:
Amplitude 
Period 
Wavelength 
Area 
Generally the equation for Power is mathematically given by



Speed=distance/time, rearranging gives speed*time=distance therefore the first section of the journey yielded a total distance of 40km, the second journey was stated to be 20km which was completed in (20/30)*60=40minutes. Therefore the total journey was 60km which was completed in 1hr40 minutes so the average speed was (60/1.66..)=36km/h.