Which dependencies to inject?

dependency.rb

class InjectMe
  def initialize(
    kernel:,
    name_utils_class:,
    text_helper_class:,
    email_class:,
    car:,
    pet:,
    payment_processor:,
    random_class:,
  )
    @kernel = kernel
    @name_utils_class = name_utils_class
    @text_helper_class = text_helper_class
    @email_class = email_class
    @pet = pet
    @payment_processor = payment_processor
    @random_class = random_class
  end

  def log_something
    @kernel.puts "hello"
  end

  # class you instantiate
  def reverse_name
    @name_utils_class.new("my name").reverse
  end

  # class with static method
  def format_address
    @text_helper_class.format_address("2 new st, Canberra")
  end

  # Using constant from class
  def valid_email?(email)
    email.match(@email_class::VALID_EMAIL_REGEX)
  end

  # instance of a class with no state
  def num_wheels
    @car.default_wheels
  end

  # instance of a class that holds some state (that's not specific to this class)
  def pet_sounds
    @pet.sound
  end

  # instance that hits external system
  def pay
    @payment_processor.process_payment
  end
  
  # Standard ruby class
  def uuid
    @random_class.uuid
  end
end

InjectMe.new(
  kernel: Kernel,
  name_utils_class: NameUtils,
  text_helper_class: TextHelper,
  email_class: EmailUtils,
  car: Car.new,
  pet: Pet.new("dog"),
  payment_processor: Paypal.new,
  random_class: SecureRandom,
)