Severity: Warning
Message: fopen(/home/answnniz/public_html/system/sessions/ci_session6f7083656bc85fe4e1e09343743e65392742ac55): failed to open stream: Disk quota exceeded
Filename: drivers/Session_files_driver.php
Line Number: 176
Backtrace:
File: /home/answnniz/public_html/index.php
Line: 315
Function: require_once
Severity: Warning
Message: session_start(): Failed to read session data: user (path: /home/answnniz/public_html/system/sessions)
Filename: Session/Session.php
Line Number: 143
Backtrace:
File: /home/answnniz/public_html/index.php
Line: 315
Function: require_once
The surface of a pond of area 20 m2 is covered by ice of uniform thickness 6 cm. The temperature of the ice is −5°C. Calculate how much energy is required to melt this amount of ice into water at 0 °C.