a shopper pushes a grocery cart 20M at a constant speed a level ground, against a 35N friction force. he pushes in a direction below the horizontal. a) what is the work done on the cart by friction. b) what is the work done on the by the gravitational?., c) what is work done on the cart by the gravitational friction?,d) find the force the shopper exerts using energy consideration ? , c) what is total work done on the cart?​

In the circuit shown below, with each bulb holding a resistance of 60 ohms, how many amps of current are flowing? express your number as a decimal.

Which magnetic property best describes a magnet’s ability to act at a distance? magnets are dipolar. magnets attract only certain objects. magnets have magnetic fields. magnets can transfer their properties to certain materials.

Which best describes the first law of thermodynamics as compared to the second law of thermodynamics? a. the first law describes how thermal energy is conserved but not the direction it moves. b. the first law describes the direction thermal energy moves but not how it is conserved. c. the first law describes how thermal energy can be created but not how it can be destroyed. d. the first law describes how thermal energy can be destroyed but not how it can be created.