The temperature rise of the body after 30 min is 1.0 °C.
<u>Explanation</u>:
The heat capacity of water is equal to one and it is the number of calories needed to raise the temperature of one gram by 1 degree celsius.
Cp = 1 cal/ g°C
(0.80)170 kcal/hr (1000 cal/kcal)
(30 min) / 60 min/hr = 68000 cal.
68000 cal / 1 cal/ g°C / (70 kg (1000 g / kg)) = 1.0 °C.
Answer:
Explanation:
Torque, is given by
where F is force and r is perpendicular distance
where
is the angle of inclination
Torque, can also be found by
where I is moment of inertia and a is angular acceleration
Therefore, Fr=Ia and F=mg where m is mass and g is acceleration due to gravity
Making a the subject, and already I is given as
hence
Taking g as 9.81, is given as 37 and L is 1.2
Answer:
Explanation:
Velocity of the ship is given as
the direction of the velocity of the ship is making an angle of 11 degree with the current
so we will have two components of the velocity
1) along the direction of the current
2) perpendicular to the direction of the current
so here we know that the component of the ship velocity along the direction of the current is given as