Question

Hema thinks of a number and subtracts


from it. she multiplies the result by 4/5 the

result obtained is four times the original number she had thought of. what is the

number?​

Answer 1

Step-by-step explanation:

Given that,

Mass of elevator + passengers, M=1800Kg

Speed, v=2m/s

Friction force, f=400N

Power delivered, P=force×velocity.........(1)

Force acting downward,

F=mg+f

F=1800×10+4000

F=22000N

Put the value of F in equation (1)

P=22000×2

P=44000Watts

Answer 2

yᴏᴜʀ qᴜᴇꜱᴛɪᴏɴ ɪꜱ ɪɴᴄᴏᴍᴩʟᴇᴛᴇ ᴜ ʜᴀᴠᴇɴ'ᴛ ꜱᴀɪᴅ ᴡʜᴀᴛ ɴᴜᴍʙᴇʀ ɪꜱ ꜱᴜʙᴛʀqᴄᴛᴇᴅ ꜰʀᴏᴍ ᴛʜᴇ ɴᴜᴍʙᴇʀ

ꜱᴏ ᴄᴏʀʀᴇᴄᴛ ɪᴛ ᴀɴᴅ ᴜᴩʟᴏᴀᴅ ᴀɢᴀɪɴ...