Numerical Response 1 A space probe was launched to perform a surface study of Venus. The probe's average distance from the centre of Venus was 6.79 x 109m. The mass of Venus is 4.88 x 1024 kg. The average gravitational field strength of Venus at the probe's location is N/kg.

An ideal polarizer with its transmission axis rotated 30 degrees to the vertical is placed in a beam of unpolarized light of intensity 10w/m^2. after passing through the polarizer, what is the intensity of the beam? a. 8.7 w/m^2 b. 7.5 w/m^2 c. 5.0 w/m^2 d. 10 w/m^2 e. 2.5 w/m^2

Explain why electric current cannot exist if a current doesn't have a voltage source.

Two forces produce equal torques on a door about the door hinge. the first force is applied at the midpoint of the door; the second force is applied at the doorknob. both forces are applied perpendicular to the door. which force has a greater magnitude?